The US superstar, who is currently midway through her Las Vegas residency, took to the stage at the city’s T-Mobile Arena, opening the show with a medley of hits and energetic dance moves.
Britney made her way onto the stage sporting a red, sparkly ringmaster-inspired ensemble, which was soon taken off to reveal an equally dazzling carnival-style outfit.
The hitmaker kicked off her five-minute long set with ‘Work Bitch’ and ‘Womanizer’, before straddling a giant guitar for ‘I Love Rock ‘n’ Roll’.
The medley then continued with ‘Breathe On Me, ‘I’m A Slave 4 U’ and ‘Touch Of My Hand’, before ending on ‘Toxic’.
Later in the evening, Britney was presented with the Millennium Award, which, until now, had been handed out just twice in Billboard’s history, to Beyonce and Whitney Houston.
A number of other A-listers took to the stage on night, including Madonna, who paid tribute to Prince, with a little help from Stevie Wonder.
Rihanna also gave a rousing rendition of her ‘Anti’ track ‘Love On The Brain’, while Kesha’s Bob Dylan tribute earned a standing ovation.
See all the snaps from the Billboard Music Awards red carpet below...