More NYE Celebrations: Nicole Richie, Jennifer Lopez, Mariah, Robin Thicke…

Not only did Christina Aguilera host her own event last night at TAO Nightclub, she also found time to make it over to pal Nicole Richie’s NYE celebration at LAVO in Vegas. Hubbie Joel Madden DJ’d while other celebs like Wilmer Valderrama partied it up.

Though it snowed like crazy last night, here in New York, Jennifer Lopez performed in Time Square. She had three outfit changes. And it seems like sparkles, leotards, and catsuits are the new uniforms for entertainers these days.

Your fave cougar couple, Mariah & Nick Cannon, of course rang in the new year together. They hosted an event at M2 Ultra Lounge in New York City. They’re so cute together!

Soon-to-be parents, Robin Thicke and wife Paula Patton, celebrated their NYE with UK singer Leona Lewis at The Bank Nightclub at Bellagio in Vegas.

[Side, yet related note: Rob & Paula are high school sweethearts and met in a teen club at age 14 (about 18yrs ago). The couple recently announced they are expecting their first child, a boy, in May of 2010. They married in '05.]

…Now that, is love!