Iggy Azalea has been ''annoying'' Britney Spears with ideas for their music video.

The 'Fancy' hitmaker collaborated with the 33-year-old star on a track named 'Pretty Girls' which will feature on Britney's new album and Iggy has confessed she's been bombarding her with ideas for the clip.

Speaking about working with the 'Piece of Me' singer, she shared: ''She's super nice. She came to my house and had lunch and I didn't know what to expect, and we actually really get along.

''I've been texting her, annoying her with all my ideas for the video and she's been a really good sport about it, so I'm really excited.''

The 24-year-old rapper previously claimed 'Pretty Girls' would be the first single off her new album as Britney didn't think her new record would be ready in time but she's since been back in touch to ask for it back.

Iggy explained to MTV News: ''It was such a journey, that song. I got asked and it was her song, and then she didn't think she would have her album done in time, and then I rewrote parts of it and it became my song, and I tried to make it all mine and keep it.

''Then she said, 'No, no, I am going to take it, my album is ready'. And so I swung it back her way because she's Britney Spears, you have to do that. She gets whatever she wants.''

Iggy also spoke about the sound of their collaboration, claiming it evolved into a ''cool'' ''powerhouse'' duet.

She added: ''It's kind of really evolved into something that I was just featured on originally, into really a true duet, where I'm on the chorus with her. We go back and forth, she has her verses and I have my verse, but it's not just me kind of popping in it. It really is a duet. And I love that. I love a good pop duet where it's equally powerhouse. Cool.''