Hollywood Holidays -- Entertaining

Stars' Ho-Ho-Holiday Pics

See how Lady Gaga, Jessica Alba and more are getting into the spirit of the season

MARIAH CAREY

"Looking at the great Christmas card from lambs around the world, let's keep celebrating, you guys are super festive!" Tweeted Mariah Carey about her fan-created holiday greeting, which she showed off on her Twitter page. And just check out the tree in the background!