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JAMESON MOON HART: INSTAGRAM
He's here! Pink posted a pic of herself with her newborn son, her second child with Carey Hart, on Dec. 26. The couple mentioned in 2010 while expecting daughter Willow, 5, that they loved the name Jameson for a boy. "My dad's name is James, and my brother's name is Jason," the singer told Access Hollywood at the time. "[Carey and I] are both Irish, Carey's middle name is Jason, and Jameson — we like whiskey. That's a no brainer."
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DREAM KARDASHIAN: INSTAGRAM
"Today was amazing. I am so lucky!! Thank you [Chyna] for having our baby and being so strong! I love you so much and can't wait to see her get older day by day with you Chy! I love you and Dream so much and Appreciate both of you," the new dad wrote alongside a snap of his and fiancé Blac Chyna's newborn baby girl — born Nov. 10 — on Instagram.
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JOURNEY RIVER GREEN: INSTAGRAM
Megan Fox and Brian Austin Green's third child may have made his Instagram debut three months after coming into the world, but the wait was well worth it! The New Girl alum shared a mother-son selfie on Instagram on Oct. 26. The couple is also parents to sons Noah Shannon, 4, and Bodhi Ransom, 2, as well as to 14-year-old Kassius, Green's son from a previous relationship.
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VALENTINA ANGELINA JONAS: TWITTER
Kevin Jonas has a new little "Lovebug" to dote on. The former Jonas Brothers member and his wife Danielle welcomed their second child on Thursday, Oct. 27, their rep confirms to PEOPLE exclusively. The father-of-two shared the first photo of the pair's newborn daughter, Valentina, calling her his "newest love."
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DAISY JOSEPHINE SUDEIKIS: INSTAGRAM
She's here! Olivia Wilde and fiancé Jason Sudeikis welcomed their second child together — a girl! — on Oct. 11, which also happened to be International Day of the Girl. "There goes the neighborhood," Wilde wrote, captioning a pic of the couple's daughter resting on an oversized plush lamb. "Daisy Josephine Sudeikis. Born, like a boss, on #internationaldayofthegirl."
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ANACΑ NICOLI: INSTAGRAM
Candice Swanepoel's little angel has arrived! The Victoria's Secret model and her fiancé Hermann Nicoli welcomed their first child, son Anacã, on Oct. 5, shared the news on Instagram. "Life is sweet," she wrote, captioning a snap of little boy.
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DUSTY ROSE LEVINE: INSTAGRAM
Adam Levine has a new Angel to love! The Maroon 5 frontman and his Victoria's Secret model-wife Behati Prinsloo welcomed their first child together — a girl they named Dusty Rose — on Sept. 21. "Words can't describe," Prinsloo wrote alongside a pic of Dusty laying on dad Adam's chest.
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LULA ROSE GARDNER: INSTAGRAM
Hello, Lula! Liv Tyler and fiancé David Gardner welcomed their second child together on July 8, 2016, and introduced the newborn to fans on Instagram two days later. "We are sooooo happy heart exploding with love!!!!!" Tyler wrote on her account, alongside a sweet photo of Gardner cuddling with the sleeping infant.
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SAMUEL THOMAS LOWE: INSTAGRAM
Former Bachelor Sean Lowe and wife Catherine introduced their baby boy to the world on Instagram. "Samuel Thomas, I think I'm in love," Giudici Lowe captioned a photo cradling her new bundle of joy while resting in a hospital bed.
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SHANE MANESS: INSTAGRAM
Erika Christensen is already a pro at Parenthood! The actress shared the first photo of her newborn daughter with husband Cole on Instagram. "Week one down with the new BFF," writes Christensen on the sweet snap that shows the new mom planting a kiss on her baby's cheek. "Our girl Shane is killing the newborn game."
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KIRRA MAX BOHAN: INSTAGRAM
Audrina Patridge just showed us baby Kirra's … socks! The former Hills star took a stroll with her newborn daughter and documented the outing on her Instagram account. "To tell you the truth, I haven't stopped staring at her since she arrived," Patridge, who's engaged to fiané Corey Bohan, wrote on her blog Friday. "There are no words to describe the amount of love I have for her… I never thought I could feel so many feelings for someone so small."
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AIDAN CLINTON MEZVINSKY: TWITTER
Former first daughter Chelsea Clinton introduced her second little one with a sweet hospital photo. "At 7:41 AM Saturday, our family and hearts expanded with Aidan's arrival. We are blessed," she captioned a snapshot of her and husband Marc Mezvinsky admiring their newborn. Former president Bill Clinton and Hillary Clinton also celebrated their grandchild with adorable pictures. "Aidan has made two dads very happy this Father's Day. Hillary and I are thrilled for Marc and Chelsea," Bill wrote on Twitter. "What a joy being with our new grandson, Aidan. So grateful," added Hillary. Aidan joins 20-month-old big sister Charlotte in the famous family.
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MONTGOMERY ARGO RIKAART-SUDDUTH: INSTAGRAM
The Young and the Restless actor Greg Rikaart and husband Robert Sudduth shared a touching message along with a black-and-white photo of their first child. "We fight hate, fear, bigotry, homophobia and injustice in the world with love, intellect and enlightenment," Rikaart wrote on Instagram. "In the truest and most pure definitions of the latter words, it is with full hearts that Rob and I take great pride in introducing our son, Montgomery Argo Rikaart-Sudduth…He is light and love and magic." The new addition arrived June 12 in Roseville, California, via surrogate.
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ODE MOUNTAIN DELORENZO MALONE: INSTAGRAM
"The best weekend of our lives!!! What an incredible blessing to be chosen by this amazing, kind, gentle and beautiful soul to be his parents," actress Jena Malone captioned a black-and-white photo of her newborn and his parents. "Humbled and in complete awe that we get to experience the most ancient and transcendent love that exists." The baby boy is the first child for Malone and boyfriend Ethan DeLorenzo, who posted an adorable video of Ode's first moments home.
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STORY GOLDBERG: INSTAGRAM
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BOOMER ROBERT PHELPS: INSTAGRAM
Olympic swimmer Michael Phelps and fianceé Nicole Johnson didn't waste any time kicking off son Boomer's Instagram presence. "As my very first Mothers Day winds down I could not be more thankful for my lil family … Some of the best moments for me today were watching how incredible of a dad @m_phelps00 will be to our little one," the new mom captioned an adorable photo of the newborn. Phelps shared a number of pictures of his own, writing "Best feeling I have ever felt in my life," alongside one sweet hospital snap.
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JOSEPHINE KATE GAVIGAN: INSTAGRAM
"I am endlessly grateful for her safe arrival and my heart is so full of love that it threatens to burst," Grey's Anatomy star Jessica Capshaw captioned her fourth child's first appearance on social media. Husband Christopher Gavigan also posted the newborn snapshot on his account, adding "Welcome to our newest amp sweetest little one. Our hearts are bursting in so many ways."
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LUNA SIMONE STEPHENS: INSTAGRAM
It's clear Baby Luna is already a natural in front of the camera – just like her mom, Chrissy Teigen! The model showed the new addition to her and John Legend's family with a sweet shot of mother and daughter cuddling on the deck. And Teigen even revealed that the bundle of joy already has a nickname, captioning the post "Hi my Lulu!"
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THEODORE JAMES KUSHNER: FACEBOOK
Ivanka Trump welcomed her third child, a boy, with husband Jared Kushner, whom she revealed in a flawless post-labor Facebook pic. "Jared and I feel incredibly blessed to announce the arrival of Theodore James Kushner," she wrote. "Baby Theodore. My heart is full. xx, Ivanka #grateful."
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SAINT WEST: INSTAGRAM
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OWEN BARTLETT: INSTAGRAM
He's here! Glee star Heather Morris introduced son Owen, her second child with husband Taylor Hubbell, on Feb. 11, via Instagram. "I can't tell you how amazing an experience to go from a cesarean and having a VBAC … but I did it with the loving help of my husband, Dr and family … and of course this little guy," she captioned the sweet pic.
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FREDDIE REIGN: INSTAGRAM
Six days after welcoming their first child in Los Angeles, One Direction's Louis Tomlinson and friend Briana Jungwirth showed off the adorable new addition on Instagram. "Meet my little lad, Freddie," Tomlinson captioned a photo of his son cuddled up against his chest. Meanwhile, Jungwirth shared a pic of the "Love of my life" getting a smooch in their hospital bed.
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TALON BARTELL: INSTAGRAM
Soccer star Landon Donovan has celebrated a lot of victories over the course of his career, but we think this one might be the cutest of them all. The former U.S. Men's National Team captain presented his newborn son, Talon Bartell, to the world with a sweet family photo of himself, wife Hannah Bartell and their bundle of joy. "I've been fortunate to achieve a lot of wonderful things in my life but nothing comes close to being a father," Donovan captioned the shot … and then, we assume, the crowd went wild.
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JASMINE JOHNSON: INSTAGRAM
"Christmas came early!" Dwayne "The Rock" Johnson captioned the first photo of his newborn daughter, Jasmine, which was taken just minutes after her birth on Dec. 16. "We're extremely grateful," Johnson wrote. "Kinda crazy but in this cool and powerful skin to skin bonding moment with my newborn baby Jasmine, I had just one wish I asked the universe… Give me the strength to be a better man today than I was yesterday." He even offered other new fathers a little bit of advice, adding: "The goal of ‘being better’ will never steer you wrong. Trust me."
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MAXIMA CHAN ZUCKERBERG: FACEBOOK
The Facebook founder and wife Priscilla didn't welcome their new baby girl into the world with just a sweet status update – they also pledged to donate 99 percent of their Facebook shares to charity, in order to make the world a better place for Max and the next generation of children, he wrote. "Your mother and I don't yet have the words to describe the hope you give us for the future," reads their open letter to their daughter. "Your new life is full of promise, and we hope you will be happy and healthy so you can explore it fully."
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SAYLOR JAMES CUTLER: INSTAGRAM
A week after giving birth to her third child with husband Jay Cutler, Kristin Cavallari posted an adorable selfie of herself holding her new baby girl. "Really sad about missing my 10 year high school reunion last night ... so many people I wanted to see ... but at least I have aa good excuse," the Laguna Beach alum captioned the November 2015 photo.a
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JOSEY HOLLIS DORSEY: INSTAGRAM
Naya Rivera and husband Ryan Dorsey gave us a Halloween treat by introducing their 6-week-old on Instagram on Halloween. "Trick or treat from my Skeleton Boy," Dorsey wrote below his pic, with Rivera captioning hers simply, "Trick or treat!"
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JAGGER SNOW ROSS: TWITTER
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EVA JAMES JENNER: INSTAGRAM
Just two months after Brandon and Leah Jenner welcomed daughter Eva James in July, Leah officially introduced her to the world with a sweet Instagram photo of their baby girl all cuddled up with her mama. "It's an honor, little one," Leah captioned the photo, but it's safe to say the honor is all ours.
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MAX RED CASPE: INSTAGRAM
After welcoming a baby boy with husband David Caspe in May, former Marry Me star Casey Wilson introduced her 3-month-old son, Max Red Caspe (who bears a striking resemblance to his dad – peek that romper) to the world via Insta on Sept. 10.
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ERIC THOMAS DECKER II: INSTAGRAM
They made it to the end zone! A few days after welcoming her second child with pro football player husband Eric, country star Jessie James Decker took to Instagram to share the first photos of her baby boy, Eric Thomas Decker II. "We are so overwhelmed with love and feeling so blessed to have him join our family," she captioned the photo of the newborn, little brother to Vivianne Rose, 17 months.
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RYAN AVA ERHARD ROSENBERG: INSTAGRAM
After months of teasing photos, Haylie Duff finally introduced the world to her chubby-cheeked first-born, Ryan Ava, on Instagram. The snap, however, was well worth waiting for: Her mini-me sported a smirk and a pink bathing suit on "baby's first vacation." She then posted another picture to celebrate 16 weeks of adorableness.
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SLOANE AVA SIMONE HAGGERTY: INSTAGRAM
Macklemore lullabies are now on repeat! The rapper became a first-time dad on May 29, but kept the birth – and his June wedding to Sloane's mother Tricia Davis in June – under wraps until August, when he shared this Instagram with a link to a new song dedicated to his new little lady. All together now: Aww!
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LEO THAMES NEWMAN: INSTAGRAM
This candid photo of Jaime King and Kyle Newman's second child, Leo Thames, meeting his godmother, Taylor Swift, will make your heart swell to no end. "My loves meet," King's caption reads. Although the pic is the first real look we got of the Newmans' newest addition, Swift also shared a sweet snap of Leo's tiny hand grasping her finger.
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RYAN CARSON CURRY: INSTAGRAM
NBA player Stephen Curry and wife Ayesha welcomed their second daughter on July 10. A week after the announcement, Ayesha took to Instagram to share a sweet snapshot of Ryan Carson's full head of hair, while Dad posted this snap. "I wonder how many kisses you've gotten from your daddy, Riley and I already," Mom wrote.
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HOLT FISHER SMITH: INSTAGRAM
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QUIRIN LOVE HOWARD: TWITTER
Meet the newest heir to Terrence Howard's empire! The actor shared the first photo of his newborn son, Quirin Love, after the pair enjoyed father-and-son naptime. Howard also used his Twitter post to explain the significance of his son's name: "A mythical 1/2 dragon 1/2 lion who glides above the land so as not to harm even a blade of grass."
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JAMES REYNOLDS: INSTAGRAM
Parents Blake Lively and Ryan Reynolds have been gushing about genetically blessed daughter James since her December 2014 birth, but we didn't receive physical proof of her existence until Reynolds posted this Instagram photo in May 2015. He captioned the sweet pic, "Thumb wrestling isn't always fair. Curiously, my hand is the small one." Hopefully, little James will inherit her parents' silly sense of humor.
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WOLFE LEE: INSTAGRAM
Kimora Lee Simmons posted this selfie with her son after a very all-natural birth. "Thank you also to my special 'nurse Maureen' and team that helped get this 11 pounder OUT of me," she added to the photo's caption.
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SASHA PIQUé: INSTAGRAM
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ISAIAH MICHAEL FISHER: INSTAGRAM
Clearly, Carrie Underwood's little one takes after his daddy, Mike Fisher: Isaiah, who was born Feb. 27,a looks very comfortable holding a mini hockey stick as he naps peacefully. "The Predators are in the playoffs! Just waiting to get called up! #PutMeInCoach," Underwood captioned the Instagram photo.a
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REIGN ASTON DISICK: INSTAGRAM
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DASHIEL EDAN JOVOVICH-ANDERSON: INSTAGRAM
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SCARLETT MAY STUBER: INSTAGRAM
If you didn't audibly "awww" upon viewing this, you're probably a monster (we kid!). In late March, Molly Sims posted this sweet selfie – elegantly captioned with "#grateful" and a pink heart emoji – of her week-old baby girl sleeping soundly on Mom's chest.
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PAULINE SINCLAIR: FACEBOOK
Vin Diesel (given name: Mark Sinclair), who recently revealed that his third child with girlfriend Paloma Jiménez was named after his late costar Paul Walker, posted a touching shot with his new baby girl. The actor captioned the photo with lyrics from Louis Armstrong's "What a Wonderful World": "I hear babies crying/I watch them grow/They'll learn much more/Than I'll ever know/And I think to myself/What a wonderful world."
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GENESIS ALI: INSTAGRAM
We thought his footprints were pretty adorable, but nothing could prepare us for the cuteness that followed when Alicia Keys took to Instagram to introduce the new addition she and husband Swizz Beatz welcomed on Dec. 27, 2014. In addition to a family portrait, she showed off a mommy-son Insta, writing, "Motherhood is a miracle that continues to unfold."
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LACHLYN HOPE GOSSELAAR: INSTAGRAM
"She's a 'mouth-breather' like her Daddy," Mark-Paul Gosselaar joked when debuting "sweet little angel" Lachlyn, his second child with wife Catriona (he also has two children from a previous marriage). The baby was born on Feb. 17, giving the Saved By the Bell star's brood "2 boys, 2 girls, too perfect," as he said on Twitter. "I love big families."
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HUTTON MICHAEL CAMERON: INSTAGRAM
No sibling rivalry here! Beverley Mitchell and husband Michael Cameron let 22-month-old daughter Kenzie lead the reveal of their newborn son, born Jan. 28. "Kenzie is proud to announce the arrival of her sweet baby brother, Hutton! Thank you for all the love and well wishes!" Mitchell posted on social media to accompany a black-and-white photo of the duo.
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SUMMER RAIN RUTLER: TWITTER
At 5 months old, Christina Aguilera's little girl with fiancé Matt Rutler proved she takes after her pop star mom. "Watch out … another one's getting ready to conquer the world! #driven #diva2," Aguilera Tweeted about her daughter, born in August 2014, who sported a bright pink dress and a statement diaper that aptly read "Lil Diva" for her big debut.
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VIVIENNE MARGARET MACARTHUR: BLOG
Four days after Ali Larter's daughter arrived on Jan. 15, the second-time mom posted her new baby's photo on her blog, sharing that she and husband Hayes MacArthur "couldn't be more excited." And the newborn is already winning over 4-year-old big brother Theodore: "She came bearing gifts for her brother: Batman sheets and lots of gummy bears!!! 7.5 lbs. of love," the actress wrote.
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AVA GRACE POBRE: BLOG
It's the look of love for proud new mama Stacy Keibler, who showed off her 3-month-old daughter (born Aug. 20) in a sweet black-and-white snapshot on her website. "Ava has graced us with such joy, such light and such love – we never saw it coming," the actress shares. "She is our special little lady, and I couldn't be more thankful for how she has opened my heart."
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JOSEPH FREDERICK KUSHNER: TUMBLR
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AXL JACK DUHAMEL: INSTAGRAM
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NOAH BUBLé: INSTAGRAM
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SEBASTIAN ZINCONE: INSTAGRAM
Malin Akerman's son proved to be a natural in front of the camera when his mom posted the first photo of him three weeks after she gave birth in April 2013. "Did my hair today and this was my son's reaction ... I think he likes it," she captioned the Instagram photo of Sebastian's goofy reaction. He's the first child for the actress and husband Roberto Zincone.
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NOAH MAZUR: FACEBOOK
At 7 weeks old, Alessandra Ambrésio's little guy made his modeling debut on Facebook in the arms of his Victoria's Secret Angel momma. The supermodel – who is also mother to daughter Anja, 4 – welcomed her son with fiancé Jamie Mazur on May 7.
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FINN MCDERMOTT: BLOG
"We are so excited to announce the birth of the newest member of the McDermott family!" mom Tori Spelling posted on her blog along with an endearing photo of her little one's hand right after welcoming her fourth child on Aug. 30. The little guy joins dad Dean and siblings Liam, 5, Stella, 4, and Hattie, 10 months.
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MARCELO MONTEVERDE: TWITTER
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MASON AUTENRIETH: INSTAGRAM
No sibling rivalry here! Curly Sue star Alisan Porter and husband Brian Autenrieth's baby boy, born July 17, sweetly shares Instagram camera time with his half-sister Cassy.
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INDI MARAN ALBORZI: TWITTER
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Baby Girl on the Way for Lyndsy Fonseca and Noah Bean
Headed to Hogwarts! PBteen Launches Harry Potter Collection That'll Turn Your Child's Room into a Wizard Wonderland