"Stacy London Tells You Why Clothes Can Change The Way You Feel About Yourself" \\ Stacy London \\ Photo: Courtesy of Redbook

What made you decide to get so personal in "The Truth About Style?"

What people see on TV is only one part of me. I realized that it could feel like I'm the style expert talking to you from high on the mount (instead of in the trenches myself). In my book, I really wanted to come clean about my own love-hate relationship with style and with myself. I wanted to explain why I empathize so much with the people that I work with, and I've learned so much about style and myself in the last 10 years by being on "What Not To Wear."

How does style change you from the outside in?

Seeing is believing. Clothes allow you to see yourself in a different light. They can transform you instantly and have a very real, visceral impact. Clothes become symbolic of who we are. Seeing, feeling, thinking, believing -- these are the stages of how we change our style on the outside and our self-image on the inside.

On the show, you seem ultra-confident, but in your book, you detail your inner struggles that started during childhood. What made you want to talk about this?

As a kid I was diagnosed with psoriasis, an autoimmune disorder which makes your skin cells grow too rapidly and forms a splotchy, itchy, dry rash that gets worse with stress. From age four I had this idea that there was something wrong with me, and the residue that diagnosis left even after my skin cleared up was that I always felt like I wasn't enough. I know that I'm very lucky to have my skin clear up -- not everyone's skin with this condition does. But I also got this sense that I'm not alone in this feeling from other women while hosting "What Not To Wear." Many of us feel there is something about us that is just not enough.

Many women can't make peace with the size on the tag. Why is it so important to give up waging that inner battle?

I've been every size, from a double zero up to a size 16. That's a pretty crazy range for one body. I know what it feels like to struggle with your weight, and it makes me understand why women get attached to numbers on a scale or a dress size. It doesn't mean that I have gotten over all of it myself, because I have good days and bad days just like everyone else. But the key to finding your personal style is all about learning to accept and be okay with where you are right now -- not when you lose those last 10 pounds.

Do we really have to throw out those skinny jeans we used to wear, though?

Oprah gave me this advice: You can't have a lot of things in your wardrobe that do not fit, but it's okay to hold onto one or two small pieces that you really love for inspiration if you're on a healthy weight-loss program. But if you're not actively trying to get back into that size, then it's only psychological torture because you'll beat yourself up every time you see them hanging your closet. Your closet needs to be a place of joy and celebration of who are you now -- not who you were. And remember, you can always revise your personal style in the future.