Singer Katy Perry has blasted reports she has gone under the knife to enhance her chest, insisting she has better things to spend her money on.

The I Kissed A Girl hitmaker, who is dating Gym Class Heroes frontman Travis McCoy, was rumoured to have recently had a boob job.

But Perry has denied the claims - insisting she would rather spend her money on fashion than plastic surgery.

Speaking to British newspaper The Sun, she says: "They are as real as real can be. One hundred per cent genuine and untouched... well sort of.

"I would never spend money on fake boobs. Shoes, maybe. A handbag, maybe. But plastic tits - no way!"