Katy Perry takes a "whole suitcase" of shoes on tour with her.

In a clip from her Q&A with Mario Lopez for EPIX ahead of the premiere of her concert film 'Katy Perry: The Prismatic World Tour', she said:

"I take a whole suitcase full of shoes. I'd probably say about 25 (pairs).

"I wear about five. I wear slides and Uggs like everyone else."

And it's not just a large selection of shoes the 30-year-old singer requests whilst out on the road, she also reportedly has a very extensive and "crazy" set of demands for her rider.

Katy is believed to ask for fruit, vegetables and three chilled bottles of Pinot Grigio wine as well as a room full of pink and white flowers.

A source said at the time: "It’s crazy. Katy always seems so down-to-earth when you see her on TV so we didn’t expect her to have so many diva demands.

"We’ve also been told that staff mustn’t speak to her, especially to ask for a photo or an autograph, because it angers her before the show."