Rihanna hosted her first ever Diamond Ball last night in Beverly Hills, a black tie gala benefiting the Clara Lionel Foundation. According to their website, the foundation "works to improve the quality of life for communities globally in the areas of health, education, arts, and culture."
And there were a ton of celebs ready to help out with the cause!
Kim Kardashian, Kris Jenner, Adrienne Balion, Brad Pitt, Jimmy Kimmel, Ellen Pompeo, Salma Hayek, Nikki Reed, Kat Graham and Tia Mowry were all on hand to lend support, showing up in some seriously fashionable attire.
Well ... most of it was fashionable at least.
We're not loving Kim's latest red carpet ensemble, the reality TV star showing up in an Alexander Wang for Balenciaga outfit that consisted of a black leotard, black mesh dress and an oversized jacket. She wore her hair slicked back while putting some serious cleavage on display ... as usual.
Kris matched her daughter in all-black as well, wearing a suit with sheer paneling over her chest. Both looks were a miss for us.
At least the woman of the evening, Rihanna herself, looked amazing in a pink Zac Posen dress, pink Chopard jewelry and her hair slicked back into a long pony. This was nothing short of stunning!
Hayek also looked pretty (and skinnier than ever!) in pink, while Bailon tried up one-up Kim by sticking out her booty on the red carpet. Wonder if those two former enemies met up inside?!
Check out all the photos above -- who do you think looked best?