Jay-Z, Kanye West, Ja Rule, Janet Jackson, Busta Rhymes, Ice-T, Jermaine Dupri, Mariah Carey, Paulina Rubio, Tyrese, Usher, Blu Cantrell and a breast-flashing Tara Reid were amongst the stars on hand for the ‘P. Diddy Royal Birthday Ball’, celebrating the 35th birthday of Sean ‘P. Diddy’ Combs. The bash was held at Cipriani on Wall Street in New York City on Thursday (November 4). Check out pictures from FilmMagic, GettyImages, and WireImage.