P. Diddy Birthday Party Brings Out Kanye West, Jay Z, Beyonce, Leonardo DiCaprio And More

Diddy's birthday bash Saturday night brought down the house in Bev Hills, with tons of stars ... some of whom mingled after breaking up.

The party was at a mega-mansion, and just about everyone was there ... Jay Z, Gigi Hadid, Joe Jonas, Cara Delevigne, Kendall Jenner, Kourtney Kardashian, Tyrese, Miguel, Wiz Khalifa, Amber Rose, French Montana, Heidi Klum, Kanye, Luda, Weeknd, Christina Milian, Vin Diesel, Bobby Brown, Karrueche, Scooter Braun and French Montana.