The pop star rocks the mic in L.A. during rehearsals for Sunday's American Music Awards. Plus: Heidi Klum, Matthew & Levi, Rob & Taylor and more

WHO'S THE MAN!

Diddy steps up to celebrate a V.I.P. – himself! – during his belated 40th birthday bash at New York City's Plaza Hotel on Thursday. The music mogul's star-studded party drew guests including Kim Kardashian, Jay-Z and Martha Stewart.



Sign up for our daily newsletter and other special offers.
    Choose your newsletters
Thank you for signing up! Your request may take up to one week to be processed.
    see all newsletters