See where the stars ended up last night.
- Jennifer Lopez tweeted her excitement about joining the judge's panel on "American Idol" [JLo]
- Katrina Campins pushed it in the weight room [KatrinaCampins]
- Serena Williams caught NBC's new J.J. Abrams spy drama, "Undercovers" [serenawilliams]
- Ghost Wridah was ready to drop some new tunes for his fans [_GhostWridah_]