The Firework singer is on her Prismatic World Tour and is currently wowing fans in Britain with her live stage show and jaw-dropping wardrobe.
But when she gets off stage she likes nothing more than tucking into some fresh, raw treats, reports British newspaper The Daily Star. As well as getting in her five-a-day of fruit and vegetables, with grapes, apples, pineapple, dried figs, broccoli, celery and peas said to be her favourites, Katy is also rumoured to enjoy relaxing with a drink.
The 29-year-old's rider also allegedly stretches to bottles of Pinot Grigio and a bowl of tortilla chips after every gig.
And her demands aren't just food related. The publication reports that she's also partial to some stylish interior decor as well. Specially made French lamps, a coffee table, a director's chair with her name embossed on and a cream/pink rug also help chill Katy out.
'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," a tour insider told the paper.
'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.'
To top it all off Katy is said to require an extra dressing room that only she is allowed to enter. The space is filled with pink and white flowers, plus extra clothes and beauty products.
Despite her high end demands, it seems Katy is making a mess of her hotel room once she gets off stage. She recently confessed to leaving her bathroom in a less than desirable state.
"When the bath water is a slight shade of grey, that's when you know it was a good show (sic)," she tweeted to her 53 million followers.