Supermodel Tyra Banks, who is at the peak of her career, admits to being ambitious and an "over-achiever".

The 40-year-old has no plans to "slow down" or "stop".

"I think there's a weird thing with women when we're high achievers and have high goals, sometimes it's like, 'Why don't you just sit down and have a baby?' I know I'm an over-achiever and I'm not apologetic about it," vogue.co.uk quoted Banks as saying.

She added: "I won't be slowing down any time soon; it's only going to get bigger."

Banks is the creator and host of reality TV show "America's Next Top Model", co-creator of "True Beauty", and even hosted her own talk show "The Tyra Banks Show".