Katy was rocking a pinkish/red color for a little while before going back to basic black a few weeks ago, which she obviously got bored of pretty quickly.
The singer just showed off this new 'do on Instagram in an OOTD photo and never even made mention of her hair. "OOTD school girl raincoat vibez," she captioned the pic.
While we like pretty much every single color she's experimented with, this one might be our favorite because of the way it makes her eyes pop.
Of course, we know Katy and we know better than to get too attached to any one color because there's a good chance she's selecting a new shade as we speak.
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Gallery | Celebs with Crazy, Colorful Hair!