The 'Womanizer' hitmaker revealed she was really excited about the rapper when she first saw her video to chart-topping single 'Fancy', and was desperate to work with her straight away.
She explained: ''I saw her song on TV and I was like a kid in a candy store, I was like, I love Iggy, I love that video, I want to work with her.''
Thankfully, the 24-year-old musician heard Britney - who has sons Sean, nine, and Jayden, eight - was a fan, which led to the pair heading into the studio together in December to work on a series of tracks.
She told Extra TV: ''It was really weird, because a week after that her manager was like, 'She's a huge fan of yours.' I was like, 'Let's do something together,' so it worked out.''
The 33-year-old pop star is now planning on releasing one of their collaborations as the first single from her as-yet untitled ninth studio album, with Iggy - who released her debut LP, 'The New Classic', last year - previously teasing the track is ''undeniably great''.
She said: ''We recorded a few different things and then one of those just ended up being, I think, undeniably great. Hopefully everybody will get to hear it at the beginning of next year.
''I think people are really going to love it and enjoy it. It's a really fun track.''
The actor says he isn't "holding out for more money or doing anything like that".
The drama will be making its return to the streaming service in the near future.
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