LONDON: Katy Perry is "inspired" by Pink. The 'I Kissed A Girl' singer is such a fan of the 'So What' vocalist she went to see her perform in Australia on Thursday, and swiftly took to her Twitter page to praise her.

Katy wrote: "out 2 c the P!NK show in Melbourne! She rules AUS! Can't wait, I KNOW she won't sing that song,"There U Go" but I chuckle and wish!

"okay, THAT was AMAZING! YOU MUST see the show when it comes to the STATES! P!NK @ her prime... so happy I went, inspired. Good morning USA (sic)!"

Katy - who is known for her outrageous stage outfits - admitted she was jealous of 29-year-old Pink's clothes.

The 24-year-old singer wrote: "she's really great... Shows so many different dimensions and is still personable, relatable, f****** RIPPED and wears HIGH A*S HEELS. HOW? FAN (sic)!"

Pink is not the only music star Katy is in awe of.

She has previously admitted she was a huge fan of Queen frontman Freddie Mercury and No Doubt's Gwen Stefani.

She said: "When I grow up I want to be just like Gwen Stefani. It's not a race it's a marathon. I keep telling myself this."