Lily Collins
Katy Perry
Katy Perry
Kelly Osbourne
Lauren Conrad
Ashley Tisdale
Christina Aguilera
Jordin Sparks
From subtle baby-pink streaks to full heads of bright blue and purple, check out these colourfully-coiffed celebrities who are seen sporting all the colours of the rainbow!
Lily Collins
Katy Perry
Katy Perry
Kelly Osbourne
Lauren Conrad
Ashley Tisdale
Christina Aguilera
Jordin Sparks