Katy Perry arrives at the MTV Video Music Awards at The Forum on Sunday, Aug. 27, 2017, in Inglewood, Calif. Picture: AP

Katy Perry is being sued after a stagehand claims she lost a toe after working on her 'Prismatic World Tour'. 

Christina Fish has filed a lawsuit against the 32-year-old singer alleging she was asked to move a wall before her show in Raleigh, North Carolina, in 2014, but it rolled across her foot and started bleeding. 

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According to gossip website TMZ, the stagehand claims nobody called her an ambulance so her friend had to take her to hospital, but she was offered ice for her foot. 

Christina also alleges she suffered emotional distress after doctors told her to keep her "dead toe" on for as long as possible before it was amputated. 

She insists she wasn't able to use her foot for months and her right toe became gangrenous, plus the backstage worker is no longer able to enjoy yoga sessions. 

Christina is said to be suing Katy, Live Nation and a number of stage production companies. 

The 'Roar' hitmaker closed her epic 151-show 'Prismatic World Tour' in Costa Rica in October 2015, during which she performed hits from her fourth studio album 'Prism'. 

During the run of gigs she visited parts of Europe, Asia, Australia, and North and South America. 

Shortly before the final show, she wrote: "ONE. LAST. TIME. #ThePrismaticWorldTour #151

"151 shows later it is only By The Grace Of God that I made each & every one of them. Thank you, time to grow now... (sic)"

Katy's tour was also controversial as she was said to have approached three of Taylor Swift's 'Red World Tour' backing dancers to perform on her 'Prismatic World Tour', thus starting a long-running feud between the pair.

The latest act of which has seen Taylor poke fun at Katy in her latest music video for new single 'Look At What You Made Me Do' by dressing up like the pop star.