Britney Spears and Iggy Azalea delivered the live debut performance of their new single, “Pretty Girls”, on the 2015 Billboard Music Awards in Las Vegas on Sunday.

The duo teamed up on stage at the Planet Hollywood Resort & Casino, where Spears continues her ongoing residency.

“So so SO exciting!!,” posted Spears after the event. “There are so many people to thank for making #PrettyGirlsonBBMAs happen tonight!

“Of course my girl Iggy Azalea for KILLING it on stage with me, Baz Halpin for directing, Billboard, my very talented dancers & band, and last but not least... thanks to my crew! The hardest working people around. THANK YOU!?"

The pair recently released the video for “Pretty Girls” , a song that was written and produced by the Invisible Men (Iggy Azalea, Rita Ora, Jessie J).





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