Because one night wasn't enough, MTV hosted a launch party at Trousdale last night for two new original series, "Warren The Ape" and "The Hard Times of RJ Berger." Hangovers from the night prior at Katy Perry's after party for the MTV Movie Awards must not have been too debilitating since last night's festivities had a similar draw, with sisters Paris and Nicky Hilton and the "Jersey Shore" crew front and center.
The sisters were there to support the good friend, David Katzenberg, one of the creators of "The Hard Times of RJ Berger." For Snooki and JWoww and the sisters Hilton, it was round two of girls gone wild night out.
[Photos by Wenn via]