Britney Spears & Iggy Azalea Perform 'Pretty Girls' For The First Time At The Billboard Music Awards

They're just so pretty!

Britney Spears and Iggy Azalea took to the stage at the 2015 Billboard Music Awards on Sunday for the live debut of their new collaboration, "Pretty Girls." With a small army of backup dancers behind her, Spears danced around stage in a black catsuit complete with cut-outs, and Azalea delivered her cheeky rap verse clad in a silver crop top and matching miniskirt.

Azalea, 24, is nominated for 12 Billboard awards this year, including Top New Artist, Top Female Artist and Top Rap Artist.

The pop princess and the Australian rapper released the colorful, '80s-themed video for the track last week.

Earlier this month, Spears spoke to New York radio station z100 about the concept behind "Pretty Girls."

"I wanted to do a girl anthem. Something that was very girl empowering and that was kinda funny. I thought a whole take on valley girls and just kind of making fun of that would be fun for us to do," she said.

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