And not only that, but she candidly talks about how she wished for large breasts when she was a kid!

Katy Perry sizzles on the February 2014 cover of GQ, and the 29-year-old singer talks about her body, when she lost her virginity and her beau John Mayer.

On her famous assets:
    "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?' God answered my prayers. I had no clue they would fall into my armpits eventually."

On getting work done:
    "I've never had any plastic surgery. Not a nose, not a chin, not a cheek, not a t*t. So my messages of self-empowerment are truly coming from an au natural product."

On drugs:
    The weedIm not friends with it. I cant do that stuff. Id be like in the corner: Are you trying to kill me?!'"

On her love life, Katy reveals that she lost her virginity at the age of 16 while listening to Jeff Buckley's album Grace in the front seat of a Volvo sedan. "Love that record so much," she joked. So what about her relationship with John Mayer? "I think that I needed to grow up," she says of moving on from hubby Russell Brand. "I'm just having a wonderful experience with a wonderful guy. There's no rush."

Click the gallery below for more hot pix of Katy ... and click thru to see what she has to say about President Obama and aliens!