From Cara Delevingne's punk-pink festival hair to Gwen Stefani's '90s bubble-gum pop waves, there's no shortage of celebrity inspiration to help you take the color leap.

Dying our hair pink is a striking way to change our look. Here is a selection of celebrities who dared to take the leap: from Katy Perry to Jennifer Lopez, Salma Hayek, Jaden Smith, Avril Lavigne, and ...