LONDON: Katy Perry was stunned when she was recognised by a group of fans - who thought she was actress Zooey Deschanel.

Katy Perry was mortified after being mistaken for Zooey Deschanel.

The 'I Kissed A Girl' singer was astonished when she was recognised by a group of fans in Los Angeles - only to realise they thought she was the '500 Days of Summer' actress.

She posted on her Twitter page: "F**k. I'm outside minding my own business eating pinkberry & some s**tz yell out the car "zooooooeeey desccchanel" FML, welcome to LA.(sic)”

Following the incident of mistaken identity, Katy's day failed to improve.

The 'Hot and Cold' singer took her beloved cat, Kitty Purry, for a hair cut and is appalled at the results, particularly as she was planning on taking the feline to one of her forthcoming concerts.

She added: "OMG MY POOR CAT. THEY GAVE HER A LION CUT! SHE'S SUPPOSED TO DEBUT AT PALLADIUM SAT and SHE LOOKS LIKE A RAT WEARING UGGS, DANG! KITTY PURRY EW.