Kristen Stewart has hit out at criticism that she doesn't always look "perfect." Here are a few other stars who've been singled out for their appearance: Robert Pattinson, Mark Zuckerberg, Courtney Love, Kelly Osbourne and Britney Spears.
X Factor USA Audition Episodes 3 clip - Louis guest judges
The X Factor USA Audition Episode #3 visits Kansas City, San Francisco and Austin. The episode begins in Kansas City where Simon Cowell is out ill & Louis Walsh guest judges alongside Britney Spears, Demi Lovato & LA Reid.
The episode is on ITV2 this Thursday, October 4th at 8pm.
Need a little inspiration to shift the flab? Here are some seriously impressive celebrity washboard abs, featuring Usher, Britney Spears, David Beckham, Mike Sorrentino, Pink, Melanie Brown and Gwen Stefani.