Katherine Heigl accepts the Female Star of the Year Award after part of her dress broke during the ShoWest ceremony. In the ultimate fashion nightmare, the former Grey’s Anatomy star was on stage at the ShoWest awards ceremony in Las Vegas, when the strap on her red dress broke. The American actress, 31, had been accepting the Female Star of the Year award at Thursday’s ceremony, which is the official convention of the National Association of Theatre Owners. continue reading…