… and then Paris Hilton puked during performance…

Wannabe-fashion-model Paris Hilton regurgitated on stage as she attempted to lip-sync to one of her own songs.
According to IMDB, the incident took place at a Los Angeles nightclub and was witnessed by singer Joshua Radin, who was there to watch rapper Jay-Z perform.
On his MySpace site, Radin describes the events leading up to Hilton’s hurling: “Paris, who had been swilling straight vodka from [a] Grey Goose bottle for hours, gets up on stage, has the people in charge throw her ‘record’ on the house stereo for her to lip sync two of her songs. She gets up on the stage, pukes, leaves…”