Katy Perry has revealed that she bribes her tour crew for pizza.
The singer tries to eat healthily while touring, but is constantly tempted when she sees other people tucking into fast food.
She told OK! magazine: "At the beginning I brought someone out to make food that didn't have any dairy and very little gluten. But after a hundred shows I was like, 'Let's get pizza'.
"I try and keep it healthy on the road but the crew always have pizza around so I'm like, 'Give me a slice bro, I'll give you an extra hour's sleep if you give me a slice.'"
The Firework hitmaker added that her rider is "boring" as it only has healthy foods, saying: "We have healthy snacks. It's so boring. We have a lot of kale and a lot of dried fruits and probiotics."
However, Perry shared her secret for maintaining her energy levels on stage, saying its crucial she gets enough sleep.
She said: "I sleep a lot. That's where I get my strength and rejuvenation. My operating hours are very strange.
"I'm a nine-to-five girl but not in a Dolly Parton way - I'm a 9pm to 5am girl. I start my day about noon and end my day about 3am.
"I press snooze for about an hour [when I wake up] - I'm such a horrible snoozer.
"I usually do acupuncture or some kind of alignment and then I stretch and work out. I do my shower and my regimen, all my lotions and my potions."