A star-studded red carpet at the MGM Grand Garden Arena kicked off the 2015 Billboard Music Awards in Las Vegas.
Spotted on the red carpet: Britney Spears and Charlie Ebersol, Calvin Harris, Charlie XCX, Danica McKellar, David Lee Roth, Iggy Azalea and Britney Spears, Imagine Dragons, Jennifer Lopez, Little Big Town, Mariah Carey, Meghan Trainor, Molly Ringwald and Panio Gianopoulis.
Nick Jonas, Nick Young and Iggy Azalea, Olivia Culpo and Nick Jonas, One Direction, Pentatonix, Rita Ora, Taylor Swift, Tori Kelly, Tracee Ellis Ross, Yazz.
Photos courtesy of Las Vegas News Bureau