Wiz Khalifa was all smiles as he posed beside his fiancee Amber Rose last night (Sun May 20) on the red carpet of the 2012 Billboard Music Awards, which was hosted at the MGM Grand Garden Arena in Las Vegas.

Some of the other couples who also walked the red carpet included R&B singer John Legend and his supermodel fiancee Christine Teigen; pop singers Jordin Sparks and Jason DeRulo; and actress Jurnee Smollett and her producer/songwriter husband Josiah Bell.

Check out the pictures below!