Our cameras managed to catch quiet a few celebrities on thier way in to the Us Hot Hollywood Party. Some of the guest included J-Lo, Mark Anthony, Ashlee Simpson,Jamie Lynn Di Scala,Carmen Electra,Cheryl Burke,Joey Fatone,Kim Stewart,Rose Mc Gowan,Ryan Seacrest,David Arquette,Jack Osborne and Gene Simmons just to name a few. With this list of names it was sure to be quite a party!