It's not easy being a Vogue cover girl! While taking to Jay Leno on Friday, July 26, 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.