Serena's Grand Slam Ass Serena's Grand Slam Ass 4/11/2008 1:27 PM PT There isn't a tennis court big enough to contain Serena Williams', er, talent! Paging Sir Mix-a-Lot! Serena took her booty out for a stroll in Miami on Thursday -- and no injuries were reported. Share on Facebook Share on X Serena Williams Hot Bodies Beauty TMZ Sports Paparazzi Photo