Kimora Lee Simmons: St. Bart's Bikini!

Kimora Lee Simmons shows off her bikini bod while celebrating Christmas with her husband, actor Djimon Hounsou, and their son Kenzo, 2, on Sunday (December 25) in St. Bart’s.

The happy family walked along the beach and took a dip in the ocean.

PHOTOS: Check out the latest pics of Kimora Lee Simmons

“Bottoms Up!!” the 36-year-old model tweeted. “Merry Christmas Fabs!! … Thank You 2 all who have me + the fam fab holiday wishes! I send u a kiss! Muah! I truly appreciate each & every one of you! #Fabulosity.”

10+ pictures inside of St. Bart’s bikini babe Kimora Lee Simmons…