Iggy Azalea is all about the "Pretty Girls," and the private rapper has returned to Twitter to promote her new Britney Spears collaboration. Over the weekend, the single leaked online, and the "Trouble" rapper reminded fans to wait for the official release... and she joined everyone by jumping on the Spears fangirl wagon.

Though Azalea officially quit Twitter in February after months of feuds online, she made a triumphant return to social media on Sunday (May 3) to address the fact that her hotly anticipated Spears collaboration leaked ahead of its planned official release.

"I happened to have noticed that pretty girls, my song with @britneyspears has leaked and is on some radio stations etc... I'm really really happy to see so many people loving it but i also just want to clarify its not an 'early' release its a leak and if you can we would really appreciate everyone holding out until monday to share links etc if possible (i know its hard, I'm excited too!)," she wrote.

In addition to asking fans to wait for the release of "Pretty Girls" at midnight, Azalea also revealed a fun tidbit about the song: she and Spears are singing together on the chorus!

Azalea logged back onto Twitter a few hours later to announce the official drop of "Pretty Girls" and to rain some praise on Spears.

"Pretty Girls" is out now. Spears and Azalea are aiming to premiere the song together live at the 2015 Billboard Music Awards on May 17.

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