Superstar Britney Spears has just dropped her collaborative track with rapper Iggy Azalea, entitled 'Pretty Girls', and she told Ryan Seacrest that is was amazing to work with the hitmaker as she's a huge fan. 

Speaking to On Air With Seacrest this morning, Spears explained: “I love her work and I had an idea to do like a really girl power, fun Valley girl video. So you know, we got a great song that totally made sense to do that and we just worked it out."

She then opened up about juggling her Vegas residency with being a mother to two young boys and admitted that it's a lot to deal with: "My son’s (Preston) homework is like insane! He has like three hours of homework every night. I’m seriously thinking about taking him to a new school."

Spears added that she has found a routine that means she gets to see her sons as much as possible alongside her gruelling performance schedule: “I’m home like three days out of the week, and every other week the boys come to Vegas with me, so I’m not missing too much time with them.”

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Check out Spears and Azalea's 'Pretty Girls' here: