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Katy Perry has changed her hair more often than we've had hot dinners! The pop starlet's latest hue is a rather daring shade of green. Specifically, as she describes it, "Slime Green."
There is something of a Ghostbusters vibe to it.
Her new, perhaps ill-advised, look could be a case of washing (or dying) that man out of her hair, after her break-up with John Mayer in February.
Somehow we don't think that booger hair is going to leave him crying into his coffee, but maybe that's just us.
It's not the first time the singer has experimented with rainbow locks, having already tried purple and blue in 2012, and pink for a night out with former husband Russell Brand's mother back in 2011.
Which colourful look is your favourite? Let us know in the comments.