Photo: Getty Images

By Kathleen Perricone

Katy Perry wasn’t kidding when she said she was going to dye her hair green!

Late on Monday, the “Dark Horse” singer revealed her new look on Instagram with a photo she captioned, “SLIME GREEN FOR SPRING.”

Katy’s colorist also shared a little behind-the-scenes glimpse of what went into transforming the star’s locks.

Green isn’t the first crazy color Katy has put on her hair. In 2011, she went blonde, then pink … before dying her hair blue after splitting from husband Russell Brand later than year.

What do you think of Katy’s new hair?