Perry posted an Instagram video of her latest hair transformation with pro Jesus Guerrero Katy Perry is the latest star to hop on the bob bandwagon ... to test run the hairstyle with a wig ...

And no, I don't think they planned it—the bob is simply the cut of the moment ... a wig (but good luck to you if you try to google "Katy Perry wig American Idol," if you know what I'm saying).

having just digitally witnessed Katy Perry chop her long black lengths into a deliciously choppy layered short haircut. Combining both the shaggy wolf cut trend and the bob takeover, we give you ...

Read more: Ryan Seacrest lifts lid on Katy Perry's American idol replacementLink In her initial Instagram post where she debuted the look, a shaggy bob, fans quickly commented and warned her they ...

Katy Perry, 32, looked fabulous ... a gorgeous sparkly bronze dress that fit her to perfection, but her blonde bob truly stole the show.

MORE: Katy Perry shuts down mixed fan response to her choppy new bob "Sometimes artists are like, 'Oh, that's boring, you want to make music from kind of like a tougher place,' but actually it's ...

In a display of fearless fashion that has come to be expected of her, Katy Perry lit up Instagram this ... a woollen blue dress featuring a bold cut-out that revealed more than a hint of her ...