LOS ANGELES: Katy Perry is happy with her weight and claims she doesn't need to work out because her hectic schedule keeps her in shape.

Katy Perry loves her "voluptuous" body.

The 'I Kissed A Girl' singer - who is known for her skimpy stage outfits - doesn't need to work hard to maintain her figure, but thinks she will be more prone to putting on weight as she gets older.

She said: "I don't feel pressure, no, as I know I'm kind of voluptuous and I've always been that way. Saying that, I'm young and metabolism is on my side and my schedule is so crazy that I lose weight from the intensity of it. But if you ask me that question in five or six years and I'll probably have a different answer for you."

However, the 25-year-old singer - who is engaged to British funnyman Russell Brand - is constantly nagged to eat healthily by her older sister.

She explained: "My sister makes me watch what I eat. She's a pescatarian, a vegetarian who eats fish, and she's lost so much weight from being that. She'll scream at me if some of the crew on my tour get hot pizza for a snack and I want some. Sometimes I can grab a slice, but if my sister sees me, I get a verbal lashing! I eat secretly in the corner - my one pepperoni slice."