1 of 18
2 of 18
3 of 18
"Now where should I put this last ornament?" Tweeted Tiffani Thiessen, along with an adorable photo of daughter Harper, 2½, contemplating finishing touches.
4 of 18
5 of 18
6 of 18
7 of 18
8 of 18
MOMMY & ME
Wonder what's on his list? Essence Atkins and her 11-month-old son Varro take a turn on Santa's lap during the Jayneoni Holiday House in Los Angeles on Nov. 18.
9 of 18
FESTIVAL OF LIGHTS
It's Christmastime in the city ... at least for La La Vazquez's 5½-year-old son. "Xmas season in NYC with Kiyan!" she wrote after posting a photo of her little guy standing alongside the twinkling tree at Rockefeller Center.
10 of 18
Estela, 5, keeps her eyes on the family puppy, while mom Ali Landry, dad Alejandro Monteverde and little brother Marcelo, 14 months, cuddle close for a festive photo shoot.
11 of 18
WINK TO THAT
Look who's already on his way to winning over Santa. "Henry just started winking at literally everything," wrote mom Minnie Driver of her curly-haired cutie, 3½, and his charming tricks.
12 of 18
LADY IN RED
Even the Grinch himself couldn't help but get in the spirit after sneaking a peek at Joe Nichols' adorable 8-month-old daughter Dylan's Christmas card debut.
13 of 18
14 of 18
15 of 18
"Baby's first Christmas tree," The Civil Wars' singer Joy Williams writes, sharing a sweet pic of her 5-month-old son Miles taking in the family's fully lit fir.
16 of 18
WE ARE FAMILY
Dressed to impress, Pearl Clementine, 7½ months, takes a seat with mom Lisa Stelly and dad Jack Osbourne on St. Nick's knee for the first time. "She wasn't totally stoked on him, but she managed to squeeze out a smirk for the camera," wrote Stelly.
17 of 18
MAKING A LIST
"Santa, you can read this right?" jokes 24 actress Mary Lynn Rajskub of her busy boy Valentine, 4, working hard on his wish list before sending it off to the North Pole.
18 of 18
Justin Timberlake on Expanding His Family with Jessica Biel: 'I Want to Have as Many Kids as We Can'
Everything Khloé Kardashian Has Said About Becoming a Mother
Jeffrey Dean Morgan on Instilling the Idea of Equality in His Son Gus: We've Made a 'Socially Aware Child'
From Mom-to-Be to Mother of Dragons! See Pregnant Khloé Kardashian's Budding Maternity Style