Beyonce Knowles took a nasty tumble at a concert in Orlando, Florida on Tuesday night (24Jul07) after tripping on her trenchcoat. The R+B superstar was about to descend a staircase at the Amway Arena when she lost her balance and fell head-first down 12 steps. The embarrassed singer braved the rest of the show but begged fans not to post any videos of her fall from grace on the Internet. One devotee has since handed footage she took with her camera phone to a local TV station. The unnamed woman told WKMG-TV bosses, "As she proceeded to come down the stairs, she tripped on her coat and it seems like she fell on her collarbone and face." Other fans claim Beyonce appeared to be bleeding after the staircase fall, and they were impressed with her will to continue with the show.