Back in March, the singer first debuted her new look on Instagram with the caption "fifth element flow" (interpret that how you like) and took inspiration from the model Agyness Deyn.
She previously spoke to People.com at the iHeartRadio Music Awards in March, about her decision to start going shorter:
"I feel like there’s a new wave, a new authentic vibe coming in and I think this matches," she explained.
Katy continued: "I want to redefine what it means to be feminine. Look at Scarlett Johansson, who’s one of the most beautiful women in the world. We have the same haircut and I saw her at an Oscars party and was like, ‘I’m doing it.’”
The man responsible for her new look is stylist to the stars Chris McMillan and we love it.
Now check out all of Katy's best ever hairstyles...
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