While lots of women colour they hair using dye, others don't necessarily want to make hair colour something permanent. The easiest way to play is to clip (or I suppose, glue) in a few coloured hair extensions to try things out. This year was a banner year for coloured hair extensions — certainly for Lady Gaga at least. I've chosen two of my favourite accented hair styles from her this year and have compared her to Katy Perry, Nicki Minaj, Avril Lavigne and Marina Diamandis. Vote on the look that you like best below!