Celebs go commando! From Jennifer Lawrence to Reese Witherspoon, many stars have taken the bold (but sometimes regrettable) choice to ditch their undergarments.
Oops! During her 2011 tour of Canada with Prince William, Kate Middleton inadvertently flashed her royal bum when a gust of wind caused her dress to fly up at the Calgary airport.
Credit: Splash News Online; Samir Hussein/WireImage