Exclusive: Boozing With The Stars at T-Mobile Party!

Blink 182 reunited Thursday night at the T-Mobile party at Paramount Studios - playing together for the first time in more than four years. And while that three-song show was cool enough, there was plenty of action in the audience, which was packed with celebrities..

As entertaining as the music was, RadarOnline.com couldn't help but notice when Lauren Conrad, after downing two vodka-based drinks at the bar, After ordering another drink and walking away from the bar she tripped (apparently over some wires) and hit the deck in front of everyone (including RadarOnline.com, of course). Poor LC! She looked completely embarrassed as she got up but quickly got over it and chugged another drink!

Kevin Spacey was a lot more low key, wearing a baseball cap and hanging with some male buds. He arrived early and told everyone he came to see Weezer perform. Chain-smoking, Kevin clearly didn't want to be bothered because as several girls tried to approach him, his pals made them go away.

Ashlee Simpson and Pete Wentz arrived together and looked like they were having fun. By the end of the night they were partying at separate couches but we read nothing into that!

And yes Pink and Carey Hart are back together - they showed up holding hands. Looks like they really do love each other again as they were making out on a couch in front of all partygoers.

Zachary Quinto beamed in to the party and sat in the roped-off VIP section. The "Star Trek" movie star had his buds go get him some food. Must be nice to be starring in the No. 1 movie in the country!

Anna Faris was also hungry! As soon as she walked in she headed straight to one of the servers who was holding a tray of mini cheeseburgers. Anna said she was "sstarving" and grabbed four of the little burgers and scarfed them down. Then she found some fried macaroni and cheese balls and tore into them, laughing the whole time. Wow, the girl can eat like that and still look great! So un-Hollywood!