Pop star Katy Perry admits she's terrible at cooking and can't even boil an egg.

In an interview with German magazine Joy, the 29-year-old revealed that she has no desire to be the perfect housewife.

"The first thing you should know about me is that I can't even boil an egg," she says. "Secondly, I'm always late. I can't help it; I get it from my mother. Also I find it hard to turn down sweets if there are some in the studio.''

Perry, who is currently in a relationship with John Mayer, also revealed that she suffers with bad skin days. "There are phases when I walk around with a swollen face due to acne. It's fine for people to see me like that. Then they know you don't have to be perfect to be successful. Perfection is boring.''

Perry also spoke about her religious upbringing, revealing there were a lot of things she was not allowed to do: ''My parents are very conservative Christians, so there were a lot of things I wasn't allowed to do.

''The worst part was not being allowed to stay over at friends' houses. I wasn't allowed to watch TV and had to hide my passion for pop stars.

Although I have to admit now: I didn't really miss out on much. These days I rarely turn on the TV.''