Kim Kardashian will "definitely" have a boob lift when she has children.

The Keeping Up with the Kardashians star - who is dating Kanye West - insists she has never had cosmetic surgery but will be comfortable going under the knife in future.

"It's crazy that people think I've had my nose, cheeks and lips done. It's just not the case. I'm not against plastic surgery. I will definitely need a boob lift after I have kids. Who knows if I will want to do my face one day? My mum did it, I told her to do it," she said.

The brunette beauty is known for her curvaceous figure, but she insists she still watches what she eats, even though she sometimes finds it hard to resist certain treats: "When you have curves, you're just a cheeseburger away from looking heavy. I'm changing the way I eat and it's a process because I have the biggest sweet tooth."