Jessica Simpson Wants to Be the 'Best Version' of Her Self She Can Be

The singer offers advice to new mothers in a candid talk about motherhood, wedding planning, and weight loss.
3:00 | 02/18/14

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Transcript for Jessica Simpson Wants to Be the 'Best Version' of Her Self She Can Be
Now we turn to Jessica Simpson. She says these weigh on a mission to be the best version of herself and she is sharing her sebeliuss to help other women do the same. ABC's bianna golodryga has the story. I love this body and what it's capable of. No matter what size. Reporter: It's Jessica Simpson like we haven't seen in years. Showing off that spectacular figure that made her so famous in her latest commercial for diet franchise weight watchers. My body like my life is a work in progress. Reporter: It's a far cry from the Simpson who struggles with shedding extra baby weight plastered all over celebrity magazines. I was so insecure. I couldn't even believe what I weighed. Reporter: Simpson had lost 50 pounds in the few months following the birth of her daughter maxwell in 2012 then just five months later the surprise of a lifetime, news that she was pregnant with baby number two, son, ace, now 7 months old. I don't think that I ever expected myself to see the Numbers that I have seen on the scale. Reporter: So was it hard then to suppresshat desire when you were pregnant the second time because you knew you didn't want to gain that much weight? It was hard to suppress it. I knew that I would be gaining back the weight so I didn't really think about it that much. I went on walks and I worked out throughout my second pregnancy. Reporter: And staying active now she says is key. Along with a healthier diet. What would a typical day be like for you as far as what you consume? For breakfast I'm an oatmeal girl. Lunch, I do like bread so I mean I will have like a sandwich or something. But for dinner I try and keep it super clean. Reporter: She says she gets her motivation through her fiance Eric Johnson. I have to figure out what I want my band to be. That's happening in like the next couple weeks. Reporter: And staying busy planning her upcoming nuptials. Are you thinking about wedding dresses? Yes, we're planning a wedding, since I was on "Gma" last, like I have a date. Reporter: Oh, already. I'm super excited. I have -- Reporter: Can you tell us the time of year any sort of hipss in no, but it'll be soon enough. ♪ Take my breath away ♪ Reporter: Her immediate future 1450ed's love to get back to her roots with her first love singing. I want to sing again. I want my daughter to see me on stage. My fiance has never even watched me perform which is crazy. Reporter: Wow. And but that's my passion. It's my love. Like that's everything that I am. Reporter: But being a mom is her favorite job of all. Once your children are older what do you want them to be most proud of you for? If I can give my kids anything it's just support in their dreams and who they want to be. She's so proud of being a mother. I of course aed what encouragement she could give other new mops struggling to lose the weight. While she's not the celebrity mom who bounces back a couple weeks after giving birth, that's very refreshing to hear she has lost a lot of weight and she's proved that it actually can be done. Told me it was difficult to get back to the size she is now. Embraces her body. She's very happy and what a beautiful family she has so I had to ask her if she would ever consider going back to reality TV. She said absolutely no way. Yeah. Is that right? Good decisions all the way around. She looks terrific. Thanks, B.

This transcript has been automatically generated and may not be 100% accurate.

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