Hair Colour: Blue Vs. Green
This image appears in the gallery:
Katy Perry & Lady Gaga: Return Of The Pop Queens
14. Hair Colour: Blue Vs. Green
Katy has been changing her hair colour ever since she first burst on to the scene with 'I Kissed A Girl' years ago, and it's a pretty good bet that she may just have tried out every colour out there...and Gaga's no different!