The stars were out Sunday night (May 20) as they all gathered in Las Vegas to attend the 2012 Billboard Music Awards.

Some of the big names who gathered on the red carpet outside the MGM Grand Garden Arena to pose for photos included Taylor Swift, Katy Perry, Miley Cyrus, Nelly Furtado, LMFAO, Taio Cruz, The Wanted and many more.

Check out the pics below!