Katy Perry is one of the biggest pop icons of our generation. She has an enormous catalog of hits and even if you’re not her #1 fan, you probably know the words to at least one of her songs (and catch yourself singing along when it comes on the radio).
Katy is celebrating her birthday on October 25th, and we are celebrating Katy’s big day by looking at her biggest music videos.
Let’s take a look back at the 10 most-viewed music videos on YouTube by Katy Perry.