Katy Perry has confessed she gave up booze and coffee for THREE months before appearing on the cover of US Vogue. A fate we wouldn't wish upon our worst enemy let alone our favourite pop star.
In an interview with Jay Leno on The Tonight Show Katy spilled, "I did a lot of my own prepping. 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.
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