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Katy Perry, Instagram


Nothing like a worldwide tour to keep your bangin' bod in shape.

Katy Perry took to Instagram on Monday to share a cute photo of herself in which she's sporting an itty-bitty black bikini while basking in the sun during a day off from her busy concert schedule. 

"Thank you @schlitterbahn KC for hosting the kids on #theprismaticworldtour today! We can't wait to do our costume changes with our sunburns tomorrow!" the 29-year-old pop star captioned the adorable shot.

During the "Fireworks" singer's fun-filled day, she spent time hanging with her Prismatic pals in the pool, where the group filmed a silly underwater video, which (coincidentally?) provides an extreme close-up of Perry's enviable figure. 

As for how the hitmaker maintains her impeccable physique?

"I think making my body feel good boosts my confidence," Katy said during an interview with radio station Fresh 102.7 last week. "I think if I just take a minute to get more sleep and also if I [take] a run. My favorite thing to do here in New York is bicycle right by the waterfront. Just put on a new record that I want to listen to and just go bicycling up and down, up and down. And go bicycling in Central Park! It is so nice. It's like all these scenes are changing around you. It's a beautiful feeling."

But that doesn't mean the singer won't take it to extremes if she's prepping for a special occasion—like her 2013 Vogue cover

"I did a lot of my own prepping," she shared of her first cover for the iconic fashion magazine. "I kind of went on a cleanse…I did a lot of stuff like vitamins and supplements, I changed my coffee to green tea, I didn't drink any alcohol for three months. So I was really in the zone; I just wanted to be glowing for that cover."

The raven-haired beauty is currently in the midst of her Prismatic World Tour and is scheduled to perform in Lincoln, Neb. tomorrow before she takes the stage in Minneapolis on Friday.