Even Justin Bieber Can't Stop Laughing at His Star-Studded Roast

It's official: Justin Bieber has been roasted. After weeks of buildup, stars gathered in LA to tease pop music's naughty prince on Saturday. And judging from the pictures, it's everything you could have dreamt of. Naturally, Snoop Dogg sat with Martha Stewart, Will Ferrell transformed into Ron Burgundy, and Kevin Hart and Shaquille O'Neal nearly fell out of their seats. As for famous folks in the audience, Dave Chappelle flipped off the camera as Chrissy Teigen and John Legend laughed their butt...