GQ have released a behind the scenes video of Katy Perry’s shoot – and the busty pop beauty looks incredible.

The 29-year-old singer pouts and poses up a storm as she flicks her bouncy brunette hair for camera.

The Roar hitmaker also shows off some major cleavage as she slips into into a variety of revealing underwear and swimwear, including that gorgeous white and black OMO Norma Kamali bathing suit.

Speaking to GQ US magazine, the 29-year-old said revealed she wasn’t always thisperfect and recalls praying to God for boobs so big she would struggle to see her feet.

“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?’ At age 11.

“God answered my prayers,” she said, glancing south to admire her lady lumps, adding: “I had no clue they would fall into my armpits eventually.”

Like many stars, Katy is often asked whether or not she’s had plastic surgery. Something which she strongly denies.

“I’ve never had any plastic surgery. Not a nose, not a chin, not a cheek, not a тιт. So my messages of self-empowerment are truly coming from an au naturel product,” she reiterates to the magazine.

The GQ US cover-star admits she’s not fond of the drug scene either. She ‘fessed up: “The weed – I’m not friends with it. I can’t do that stuff. I’d be like in the corner: ‘Are you trying to kill me?!'”

Katy – who is currently dating womaniser John Mayer after the break-down of her marriage to comedian Russell Brand – says she loves the record she lost her virginity to as a teenager.

She reveals her first time was aged 16 in the front seat of a Volvo Sedan while listening to Jeff Buckley’s album Grace.

“Loved that record so much,” she reflects. So let’s give one of the tracks a listen just for old time’s sake, yeah?