Katy Perry shows off new 'slime green' hair on Instagram!
Katy Perry has taken to Instagram to debut her brand new 'do a tousled bob with 'slime green' accents!
This isn't the first time the 'Prism' singer has dyed her hair a colour of the rainbow, with previous colours including red, blue and purple.
What do you think of Katy's new look? Let us know in the comments below!