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WILLOW AND JAMESON HART
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VIVIAN AND BENJAMIN BRADY
"My biggest gift! #family #love 🎁 🎄❤️☃️," Gisele Bündchen captioned a sweet photo of her and Tom Brady's daughter Vivian Lake, 5, and son Benjamin Rein, 8, putting the finishing touches on a huge tree.
The siblings recently celebrated their birthdays days apart from each other, enjoying sweet social-media tributes from both of their parents.
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Casey Wilson and husband David Caspe's younger son, 3-month-old Henry Bear, might be a couple of years away from being able to help trim the tree — but he sure is great at looking precious under it in the meantime.
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" 'Elfie' took a tumble from a high shelf and we had to carefully put him back with these special rubber gloves, making sure not to rub off the magic," Danneel Harris Ackles captioned a touching photo of her and husband Jensen Ackles' 4½-year-old helping mend the little elf.
"She was so delicate. I LOVE this time of year and all the magic moments. 🌲 #happyholidays," added the proud mom.
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EVELYN AND MABEL WILLIS
The youngest two of Bruce Willis' five daughters — Evelyn Penn, 3½, and Mabel Ray, 5½ — helped their parents pick out this year's tree. And mom Emma Heming Willis used the opportunity to share some tips with her followers about how to keep real trees fresh.
"Try using a humidifier in the room to keep the room moist," read one of her six tips, which also included putting the tree into water right when you get home and adding sugar to the water.
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ANDY AND PEARL OSBOURNE
Jack and Lisa Osbourne's little girls Andy Rose, 2½, and Pearl Clementine, 5½, are the cutest coordinating pair, wearing matching red Disney Princess-themed dresses and posing sweetly in front of a huge Christmas tree.
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"Someone tell this kid life is hard and he shouldn’t be this happy all the time," dad Sean Lowe captioned an adorable shot of the 17-month-old flashing a wide-mouthed smile while posing in front of a lit-up Christmas tree.
The Bachelor alums Sean and Catherine Giudici Lowe are expecting their second child in May.
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"Tree still needs major work - leave it to me to try to buy ornaments and lights on dec 1 when every store looks like it’s been ransacked," Daphne Oz (also mom to daughter Philomena Bijou, 3½) joked in the photo's caption.
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Dave and Odette Annable's 2-year-old daughter Charlie Mae already has a favorite Christmas character — and his name is Frosty.
"Love at first sight. All I have to do now is meet his parents. #daddysgirl," the actor joked in the caption of a photo he shared to Instagram, featuring Charlie staring in wonder at an outdoor lit-up snowman decoration.
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ARLO, LILLIE AND STELLA COLEMAN
"My Christmas muffins!" the daughter of Hank Williams Jr. captioned the cute moment, where her kids are dressed in matching Mickey Mouse pajamas.
"I was staring at old houses in the middle of nowhere (the usual) and had to stop at a random wal-mart for diapers and found these matching Mickey pj's 😍😍," she added.
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Jenna Jameson's 8-month-old daughter Batel Lu is the cutest holiday present her mom ever did see, flashing a sweet smile next to both a Christmas tree and menorah.
"The magic she's brought to my life is immeasurable," added the proud mom of Batel.
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VIVIANNE AND ERIC DECKER
"Decorating the tree this morning with the babies ... it's safe to say my daughter is me made over hahah #sassypants #lovemybabies #christmastree," wrote Jessie, who is currently expecting her third child, another son, with husband Eric Decker.
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It was a solo decorating mission for McCoy Lee this year, with mom Kelsey Mayfield Porter sharing an adorable shot of her older child with husband Scott Porter adding to his own festive felt creation.
"I made him this felt tree with ornaments and presents last year," Kelsey explained of the 2½-year-old in the photo's caption.
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GIOVANNA AND LORENZO LAVALLE
Nicole "Snooki" Polizzi's mini-mes are hamming it up for the camera in a cute new sibling snap the mother of two shared to Instagram.
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RYDER ROBINSON AND BINGHAM BELLAMY
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Victoria Beckham Shares Adorable Video of Husband David & Daughter Harper Having a Sing-Along
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James Corden on the Time He Thought He'd Missed His Daughter's Birth