"I lay on my back one night and looked down at my feet, and I prayed to God. I said, ‘God, will you please let me have boobs so big that I can’t see my feet when I’m lying down?'" she revealed in a new interview with GQ magazine (which also features her on its February cover). "God answered my prayers. I had no clue they would fall into my armpits eventually."
The "Roar" singer added, “I've never had any plastic surgery. Not a nose, not a chin, not a cheek, not a [breast]. So my messages of self-empowerment are truly coming from an au naturel product."
Perry, now 29, covered a range of other topics in the interview, too -- from religion to her belief in aliens to her performance at last fall's American Music Awards, for which she was criticized by some for dressing up like a geisha.
She told the magazine that she respects the debate about that performance but thinks her critics misunderstood. "All I was trying to do is just give a very beautiful performance about a place that I have so much love for and find so much beauty in, and that was exactly where I was coming from, with no other thought besides it," she explained.
The daughter of traveling ministers, Perry says her faith now is a more spiritual one, believing in "a cosmic energy that is bigger than me."
"I see everything through a spiritual lens," she added. "I believe in a lot of astrology. I believe in aliens."
She explained, "I look up into the stars and I imagine: How self-important are we to think that we are the only life-form? I mean, if my relationship with Obama gets any better, I’m going to ask him that question. It just hasn’t been appropriate yet."
Speaking of President Obama, she also told the magazine: "I might have won Wisconsin for him. Actually, I didn’t do too much, but he called on me a couple of times. Which was very nice."
Perry’s full interview will be in the February issue of GQ, on newsstands Jan. 28.