Zuma! Haven! Carmen! See Which Celeb Babies Celebrate Their Birthdays in August

"Have I mentioned my obsession with Leos? Happy birthday to my two boys," Holly Madison captioned a too-cute snap of her son Forest Leonardo Antonio, who turns 1 on Aug. 7, and husband Pasquale Rotella, who celebrates his own birthday the following day. 

"Life wouldn't be the same without you guys! 💖💖💖💖 🌳," added the former reality star and model.

"I blinked my eyes and now my little Cammers is 5 years old. Happy birthday to my sweet little man, the light of my life," wrote Kristin Cavallari next to a sweet Instagram photo of her son Camden Jack, who turns 5 on Aug 8.

The former reality star also shares daughter Saylor James, 21 months, and son Jaxon Wyatt, 3, with NFL pro husband Jay Cutler.

"She's THREE. 💖🎉3️⃣ All my thoughts about my sweet girl on this day are up on HappilyEvaAfter.com right now," wrote actress and blogger Eva Amurri Martino for her daughter Marlowe Mae, who hits the big 3 on Aug. 9.

"(At one point I may or may not have had to stop writing because I couldn't see the keyboard through my tears 😭)," Amurri Martino added in the photo's caption.

Sarah Wright Olsen's daugher Esmé Olivia, her younger child with husband Eric Christian Olsen, is turning 1.

"The party starts early in our house!! Happy 1st to our sweet baby girl! #squish #puppylove #babies," wrote Olsen on Aug. 9 for the adorable pic of the milestone. 

"🎈08.10.16 // 10:14pm. It's official. Alex Jay you're o n e today!" The Bachelor alum Renee Oteri Maynard captioned a photo of herself kissing her youngest son to celebrate his big day.

"I love you so. Happy you day my babe!" added the mother of three (she and husband Bracy Maynard also share son Jax Bracy, 2½, while Oteri Maynard is also mom to 12-year-old Ben).

Jessica Alba and Cash Warren's younger daughter Haven Garner turns 6 on Aug. 13 — and she rang in the big day with a pretty amazing unicorn-themed bash.

"My sweet, cuddly, hilarious Havie Pie turns 6 today! #happybirthday my angel. I love you so much!" wrote Alba alongside an Instagram gallery featuring Haven at her brightly colored birthday party.

 "You sweeten every day with your pure loving heart and contagious laughter. 🌈🦄🎂," she added. "I'm so blessed to be your momma."

Actress Busy Philipps shared a cute birthday pic of her older daughter Birdie Leigh, who turns 9 on Aug. 13.

"She was born looking like Marc's twin without a beard and I was like WHERE AM I?! And that's when I realized, she has my ears," wrote Philipps, who also shares Cricket Pearl, 4, with husband Marc Silverstein.

"Three years of joy, love, smiles, laughs, happy tears - thanking God for the gift of a lifetime, Vale," wrote Today co-host Savannah Guthrie next to a photo of her daughter, who turns 3 on Aug. 13.

Vale had a shared birthday celebration with Poppy Louise, the 2-year-old daughter of Guthrie's fellow Today personality Jenna Bush Hager.

"Happiest 2nd to our fearless Poppy! Two years of love with you in the world," wrote Jenna Bush Hager on Aug. 13 in honor of her daughter Poppy Louise's birthday.

She also shared another sweet pic of her daughter with Savannah Guthrie's now-3-year-old daughter Vale at the girls' joint birthday party. 

Eric and Sarah Wright Olsen's son Wyatt Oliver, their older child, turns 4 on Aug. 16. 

To mark the occasion, the actress shared a cute snap of a birthday donut stack with four candles, surrounded by a bevy of Moana stuffed animals.

"#littlebear is 4 !!!! 🙌🏻⭐️🌈," Wright Olsen wrote for the caption.

Summer Rain looks like she's got her mama's spunky personality!

In an adorable pic from election night 2016, Christina Aguilera's daughter has her right hand raised in a fist, accompanied by the caption, "I voted!!! Well, not really, but if I was old enough I would be with her."

Summer turns 3 on Aug. 16.

In April, Gwen Stefani shared an adorable pic of herself with sons Kingston James McGregor and Zuma Nesta Rock — the latter of whom turns 9 on Aug. 21.

"Gx @nbcthevoice #takeyourkidtowork #zuma #kingston ❤️❤️," wrote the singer and The Voice coach. 

In mid-August, Stefani threw a Harry Potter-themed birthday party for Zuma, who is her middle son with ex Gavin Rossdale.

Kimberly Stewart and Benicio del Toro's daughter Delilah Genoveva is 6 on Aug. 21 — just one day after her mama's 38th birthday!

"Happy 6th Birthday 🎉," Stewart wrote alongside an Instagram shot of herself and Delilah.

"10 years ago you came into our lives and brought so much joy and love!!" Tom Brady captioned a photo of himself and his older son at football practice. "We love you so much and are so proud of you Jack!!! Happy Birthday!!! 🎁🎈🎉❤️😎"

Jack — Brady's only child with ex Bridget Moynahan — officially hits double digits on Aug. 22.

"Good morning and hello 4!!!" Hilaria Baldwin captioned a snap of birthday princess Carmen Gabriela at her pink-and-purple-powered party.

The oldest child of the fitness guru and actor husband Alec Baldwin turns 4 on Aug. 23.

Another celeb kid to tap into the unicorn theme for her birthday festivities this year? Alessandra Ambrosio's daughter Anja Louise, who turns 9 on Aug. 24.

"Birthday fun .... #9yearsold 🦄🌟💖🌈💫🎈 #9aninhos #AnjaLouise #unicorndreams," the Victoria's Secret Angel captioned an Instagram gallery detailing the magical bash.

Rockwell Lloyd is already 2 — and mom Lucy Liu is on top of the birthday wishes.

"Happy 2nd birthday to my darling Rockwell. You are my rainbow everyday," the actress wrote alongside a giggly snap of her only child, bathed in the glow of birthday candlelight on Aug. 27.

Happy birthday, Bosley Jo! The younger child and only son of Bill Horn and Scout Masterson, a.k.a. "The Guncles," is 3.

"Happy birthday, handsome! #happybirthdaybosley," Horn captioned an Aug. 27 photo of the little boy and big sister Simone Lynne, 7, posing in front of huge pink balloons spelling out Bosley's name.

Michael Bublé and Luisana Lopilato's son Noah went full Spider-Man again for his birthday — the same theme he embraced last year, but this time with a full sweets spread.

"Total genius!! I want more, can I? Haha #superproduction #candybar," Lopilato wrote in Spanish next to an Instagram snap of a table covered with cake balls, cookies, cupcakes, a multi-tiered cake and more decorated in honor of the friendly neighborhood web-slinger.

Noah, who turns 4 on Aug. 27, was diagnosed with cancer last fall. According to a July interview with Lopilato, though, "the worst is over."

Beau Kyle is 4! The son of Jamie-Lynn Sigler and husband Cutter Dykstra celebrates his big day Aug. 28 — his last birthday as an only child (Mom and Dad are currently expecting a second son).

"Happy Birthday Beau. You are the light of my life. 4 years.. I wish I could slow down time," Sigler captioned an Instagram photo of herself and her son in matching white robes.

"Thank you for taking care of your mommy every single day," she added. "I love you more than I'll ever find the words to express."

Axl grows! Fergie's only child turns 4 on Aug. 29.

"Happy 4th bday axl jack!!! i love you -mommy 🎂🎂🎉🎉 ❤️💛💚💙💜 #axljack," the singer captioned a cute selfie of the pair.

Fergie shares her little guy with her actor husband Josh Duhamel.

It's the big 5 for Edward Duke! The son of Giuliana and Bill Rancic, who goes by his middle name, hits the full-hand age on Aug. 29.

"Our sweet little boy is 5 today 💙I can't imagine a world without you, baby boy," Rancic wrote to accompany a sweet family photo.

"So blessed to call you our son. God truly created a miracle when he brought you into our lives 🙏 Daddy and I love you forever, Duke."

Happy birthday, Finn Davey! Tori Spelling and Dean McDermott's second-youngest child (they're parents of five total) turns 5 on Aug. 30.

"I can't believe 5 years ago today this #miraclebaby was born," Spellng captioned a side-by-side snap of Finn now and a throwback. "He wanted to be here so bad and has been enjoying life to its fullest ever since."

"The bond I share with this little man is incredibly special. #FinnDavey #number4#miraclebaby #grateful #mypapabear#mamasboy #loudestofthemall #finnfive," she added.

Alyssa Milano shared a beautiful photo of herself with son Milo Thomas, who turns 6 on Aug. 31, captioning the Instagram snap with a simple heart emoji. 

The actress and activist named her son after friend and Pathology costar Milo Ventimiglia.

"Today is my baby Beatrix's 7th birthday!! She is such a magical little person and I am so proud to be her mama!" Fuller House star Jodie Sweetin captioned an Aug. 31 collage of younger daughter Beatrix "Bea" Carlin, posing alone, with her mama and alongside big sister Zoie Laurelmae, 9.

"She started off the day with donuts, her Grammie and Pa coming to visit and then more cake and presents tonight! Oh... and LOTS of unicorns!! 🦄🦄🦄 #happybirthdaybea🎂," Sweetin shared.