For years, hip-hop mogul Sean "Diddy" Combs has not only thrown lavish, star-studded parties — one of his post-VMAs soirees famously had a dress code outlined on the invitation, with the warning "DO NOT DISTURB THE SEXY" — but he's also regularly on hand to help other stars party. As Diddy turns the big 4-0(!) on Nov. 4, take a look back at his past birthday parties, plus photos of him getting crunk alongside other famous birthday boys and girls. Pictured: Then-newcomer Kanye West wishes Diddy a happy 35th, in November '04.