Rihanna must have had an amazing time inside the Roxbury nightclub in Hollywood on Jan. 10, because when the singer jumped into her awaiting SUV, there were huge dirt spots visible around the singer’s knees and even on her butt! Rihanna, 24, left the nightclub wearing a pink sweater, black heels and a pair of tight black leggings. Perhaps she shouldn’t have worn black leggings because they showed everything, including the stains on both her knees and salt shaker. Up Next: Rihanna shaking what she's got.