Star duo release 'Pretty girls' video

Britney Spears and Iggy Azalea have dropped the video for their collaborative single 'Pretty Girls'. 'Pretty Girls' was written by Little Mix and has been produced by The Invisible Men, who were in charge of the Azalea hit 'Fancy'.

The track had leaked online before its release, but that has not stopped its initial success. It was confirmed that it was currently number one on iTunes in over 30 countries.

Watch the video below.