After a year of holding on to a few left over baby pounds, Christina Aguilera debuted her new post-baby body at Tao in Las Vegas New Year’s Eve party last night.

Maybe it’s the unflattering skin tight leggin’s and tshirts we’ve been seeing her running around in all year, but it just seems like she got thin overnight.

She looks great. Maybe even better than before baby with the new fresh hair cut. Now, if we could just get her to give up that tired red lipstick the she could move forward into 2010 with the rest of us.