It's not easy being a Vogue cover girl! While taking to Jay Leno on Friday, Katy Perry admitted that the July issue photo spread -- shot by famed photographer Annie Leibovitz -- required intense preparation.
"I did a lot of my own prepping," the "Wide Awake" singer, 28, said of the cover that was shot on a farm in Upstate New York. "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 alcohol for three months."
"I was really in the zone, I just wanted to be glowing for that cover," she continued.
Despite the regimen, Perry seemed pleased with the end result -- sharing how "amazing" it was to work with Leibovitz. "She's incredible," she said. "It was really fantastic working with her. She [has] such a great vibe, she's got no ego which is fantastic, and she really let's me be creative as well."
Perry, who voices Smurfette in the upcoming July 31 "Smurfs 2" movie, also opened up about the vibe of her upcoming album, which she said will debut "soon."
"I've had a lot of time to reflect, and I think that it will continually be what I always do -- connecting to my core and trying to bring an honest message that people can relate to," she said.
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