The only person who switches up their hair more than a Kardashian is Katy Perry.The singer has absolutely no fear when it comes to trying out colours and quirky styles, and we love her bravery. But since becoming a mum to Daisy Dove Bloom earlier this year, Katy has been a little less risqué when it comes to her hair and has been favouring a mid-length blonde chop for a few months.