Britney Spears hung out last night at her designer pal Christian Audigier’s 50th birthday party. It was held at at the Petersen Automotive Museum in Los Angeles.

Before the party Audigier told People:

“I am friends with Britney. She was at my office, I believe, three weeks ago. She got some presents for Jamie-Lynn and herself too. She got a ton of T-shirts, a ton of caps. She loved it.”

Spears was most recently seen sporting some of Audigier’s Ed Hardy line in Costa Rica. She wore the “Love Kills” bikini and looked damn good while doing it!

Most people are predicting that the suit will fly off shelves since pictures have been released of her wearing it. But there is still time to get one- many online retail store still have them.

At the party, Spears hung with two girlfriends in a roped-off VIP area. Her dad Jamie Spears sat on a couch about five feet away with his head resting on his hands. Could Poppa Spears be tired of babysitting?!

Britney stayed for about an hour and a half. She smoked cigarettes on an outside patio (c’mon Brit…smoking is bad!), but didn’t have any alcohol (good job!). She also enjoyed a live performance from Macy Gray.

I wonder if they gave away free swag to all the guests?? Also in attendance was Kim Kardashian, Pamela Anderson and Fergie. And to everybody’s surprise- so was Michael Jackson!

Anyway, it’s good to see Brit out and having fun without going crazy. Keep up the good work!