Kim Kardashian wanted to be in tip top shape when she started Dancing With The Stars and is sharing her diet and fitness program with OK! Magazine:

Why did you do DWTS?
I wanted to challenge myself. When they asked me to do it, I was honored. I was definitely really nervous about it, but it’s a once-in-a-lifetime opportunity.

 Do you have any experience dancing?
I’m the girl who’s too shy to dance in a nightclub – maybe for one song, and then that’s it.

 How’s training going?
We are going on week five. It’s going really well. I have an amazing partner, Mark Ballas, and it just couldn’t be better.

Did you physically prepare before heading into dance practice?

Knowing that I was going to do this, I started heavily working out in the gym all summer. My boyfriend [NLF star Reggie Bush] taught me lots of weight training exercises that I didn’t do before.

How is dancing different than going to the gym?

You use different muscles. I definitely feel my legs toning up. It’s really good to mix it up and do something different.

Have you seen any results yet?

I’ve lost a few pounds – nothing too crazy yet, but I heard that you really start to lose weight when the show starts.

What is your fitness goal with DWTS?
I really want to be toned. Every girl has her insecurities, whether she is skinny or not. You want to look good when you’re on vacation in a swimsuit.

 Do you want to lose your famous curves?
No, not at all. I don’t even think that’s really possible. I’m going to probably have kids soon, so I want to have the perfect body before then. It’ll be harder to get in shape afterward, so why not do it now.

The complete interview can be found in Ok! Magazine when it hits newsstands on Thursday.