Here are some of them:
1. Hillary Duff
2. Nicole Richie
3. Pauly Shore
4. Colin Farrell
5. James Worthy (used to play with the LA Lakeres in the 80's)
6. Travis Payne (choreographer to the stars)
7. Bobby Trendy (not really a celeb, but he was famous for being on the Anna Nicole Smith Show)
8. Brittany Murphy
Pics:
That's pretty damn, cool. I also heard that was Britney's biggest night ever with merchandise sales. It showed the highest sales in Britney history for tour merchandise sold on site.
I'm not surprised about the tour merchandise thing, the merchandise this year kicks so much frickin' ass!!