Some of the biggest names in music/entertainment were on hand to attend the 2012 Billboard Music Awards at the MGM Grand Garden Arena in Las Vegas.

Celebs who posed it up outside on the red carpet included singers Usher, Justin Bieber, Brandy, Miguel, Monica and Robin Thicke; rappers Wiz Khalifa and Swizz Beatz; and many others.

Take a look at the pics below!