P. Diddy throws his super-famous White Party every year - only difference this time around is that he did it for a charitable cause!

Co-hosting with Ashton Kutcher, the LA event this Saturday raised awareness for Malaria No More. And who showed up? Well, everyone! Diddy and Ashton, natch, as well as:

Demi Moore, Mariah Carey, Nick Cannon, Lindsay Lohan, Khloe Kardashian, Russell Brand, Jonah Hill, Mel B., Shanna Moakler... even Chris Brown! Dayuuum, that's quite the party. And of course, you had to wear white.