This week video vixen Rosa Acosta celebrated her birthday in Los Angeles at the Supper Club. Looks like everybody and their celebrity cousin came out to celebrate. We spotted a chest naked Chris Brown (who performed) along with Neyo, Tyga and Tank. Comedian DeRay Davis was also present, along with Dj Feli Fel, Wiz Khalifa and some other A-listers. Peep the pix.