LAS VEGAS, NV - MAY 17: Co-host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Steve Granitz/WireImage)
LAS VEGAS, NV - MAY 17: Co-host Chrissy Teigen attends the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada. (Photo by Steve Granitz/WireImage)