Celebrities are a fickle bunch, especially when it comes to their hair. One day it'll be a short choppy bob, the next flowing locks Rapunzel would be jealous of. This lot also like give their head a brand new look by switching up their hair colour. A lot.
Fancy having a bit of a change yourself? Have a look through our gallery of looks before you leap into the hairdresser's chair.
Hair colour chameleons! Lily Allen, Sienna Miller, Caroline Flack and more
1 of 6ashley-green-hair
2 of 6caroline-flack-hair
3 of 6fearne-cotton-hair
4 of 6lily-allen-hair
5 of 6sienna-miller-hair
6 of 6