Kim Kardashian

 Kim Kardashian and Kourtney Kardashian seen filming their reality show 'Kourtney And Kim Take New York' in Tribeca, NYC...

 Kim Kardashian

 Kourtney Kardashian

 Kim Kardashian

 Kim Kardashian

Kim Kardashian hit 30 this year, but she's not too old to believe in Santa Claus! She tweeted last night: "I'm getting ready for my moms Christmas Eve party! Sooo excited!!! Doesn't anyone else believe in Santa like me?"

Kim Kardashian (Photo Agency) The reality star is spending the holidays with the whole Kardashian clan and started the festivities off with her mom's annual Christmas Eve party -- and beforehand she hit the gym! When she got back from filming in NYC she vowed to get back into the exercise routine and she's certainly sticking to her word.

Perhaps she's keeping her diet routine in check so she can fit into a sassy New Year's Eve outfit. She's already planning her ensemble, and asked her twitfans to chime in: "What should I wear for New Years? I am desperately looking for something extra fab!" she tweeted.