There were some great style moments at this past weekend's 54th Annual Grammy Awards! Celebrity hair at the event ranged from shocking — Katy Perry's blue hair! — to stunning — Rihanna's new sexy blonde locks! — and hit every note in between. 

The Grammy Awards are the perfect event for celebrities to show off incredible fashion and fabulous new looks, and some of our favorite hair moments have come from Grammys shows from the past. Here, a look back at our favorite Grammys hairstyles.