Britney Spears and Iggy Azaela Nail 'Pretty Girls' Billboard Awards Performance

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This! This is the Britney Spears we know and love!

Spears killed it on the Billboard Music Awards on Sunday, performing "Pretty Girls" with Iggy Azalea live at the Planet Hollywood AXIS Theater in Las Vegas -- aka the home of Spears' residency show, Piece of Me.

The pair kicked things off with an out of this world entrance before launching into a high-energy rendition of the song.

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Dare we say this tops their Earth Girls Are Easy-inspired music video? Yep, definitely.

That bod! Those moves! (And just two weeks after that ankle injury!) You better werk, B!

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Ahead of their performance, Iggy opened up to Entertainment Tonight's Cameron Mathison about Brit Brit's recent spill, which left her in an ankle brace for several days and forced her to cancel multiple performances.

WATCH: 6 Reasons We Love Britney Spears on Instagram 

The missed shows didn't stop Britney from playing some football on the beach on her sick days, though, leading to speculation about how serious the injury really was. (contextual link)

"When we were at rehearsals, I was nervous," Iggy confessed.

But Brit showed no signs of stress during the dance-heavy performance. "She was killing it. She didn't seem like there's anything wrong," Iggy said earlier in the night. "She was really confident. I'm excited and nervous."

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Britney recently Tweeted about adding "Pretty Girls" into regular rotation in her Piece of Me performances – and now, we can’t wait!

For more on Brit's scary fall (clearly, a thing of the past) press play on the video below.

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