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 rumored to have recently had a breast job.But Perry has denied the claims. She says she would rather spend her money on fashion than plastic surgery.Speaking 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!”