Nick Jonas rocks a purple suit with his lady Olivia Culpo at the #BBMAs This image appears in the gallery:Billboard Music Awards 2015 Pictures: The Stars Arrive In Style On The Red Carpet In Las Vegas! 3. Nick Jonas rocks a purple suit with his lady Olivia Culpo at the #BBMAs Picture: PA 19 images See the full gallery: Billboard Music Awards 2015 Pictures: The Stars Arrive In Style On The Red Carpet In Las Vegas!