One pop star, one MTV awards show, countless costume changes

Katy Perry larks around with the MTV logo. Oh, it's going to be a wacky night! Photograph: Sean Gallup/Getty Images

Lady Gaga couldn't be in Berlin last night to pick up her award for best new artist, so Perry channelled the singer via some strange hip accessories Photograph: Kevin Mazur/WireImage

Katy Perry, seen here sitting inside a giant stiletto, obviously hasn't heard the one about the woman who lived in a shoe (for those who don't know, she didn't kiss a girl and it doesn't involve a happy ever after with Russell Brand) Photograph: Kevin Mazur/WireImage

Uh oh, someone plays the 'pull the chair away before they sit down' game on Katy! Photograph: Kevin Mazur/WireImage

You know it's been an interesting evening for wardrobe when the most demure outfit is a 10ft-long strapless bright orange ballgown Photograph: Jeff Kravitz/FilmMagic

Is it a shirt? Is it dress? Is it an upside down lampshade? Only Perry knows ... Photograph: Kevin Mazur/WireImage

Perry shows her support for Russell Brand's football team with a West Ham-branded corset. Quite possibly the worst outfit we've seen all year (it's all in the eye of the beholder, we know) Photograph: Kevin Mazur/WireImage

Oh my, it's even worse from behind! (Depends on who's looking, we know) Photograph: Kevin Mazur/WireImage

Perry opts for modesty with a red velvet jacket and, er, some tights Photograph: Kevin Mazur/WireImage

Foo Fighter Dave Grohl shows his excitement on stage. Good to see Dorian from Birds of Feather making a comeback Photograph: Ian West/PA

The dress may say 'showbiz!' but the expression says Perry is knackered after 412 costume changes. Goodnight Berlin! Photograph: Jeff Kravitz/FilmMagic