Following in the footsteps of Claudia Schiffer, Mariah Carey, and the woman who started it all, Demi Moore, a heavily pregnant Jessica Simpson has thrown modesty out the window as she bares all -- save for a few select parts covered by her hands -- on the cover of a magazine. (Scroll down to see the entire cover. Discretion advised.) But the 31-year-old doesn't just reveal her new, bigger body in Elle's April issue , she also reveals some pretty big news: The singer-turned-actress-turned-fashion designer is having a girl! And she's hoping for a girly girl at that.

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"Ah swear, ah will croak if she asks me for a pair of Nikes instead of Christian Louboutins!" Simpson, who will serve as a "mentor" on the upcoming reality competition show "Fashion Star," tells the magazine in her signature Texas drawl. "If she ends up bein' this volleyball-playing, basketball-playing woman I'm looking up at! Eric is so athletic. We're gonna have this ath-a-letic girl and I won't even be able to take her shopping, 'cause all she's gonna want is sports bras and Nikes!"

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The Eric she's referring to is Simpson's fiancé, pro football player Eric Johnson … and the reason their future daughter could be one very large baby. (Her physician is predicting 10 pounds, the same size Johnson was at birth.) "Me, I was only six pounds," she says. "So maybe Eric and I can meet in the middle."

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The couple apparently didn't have any trouble meeting in the middle when it came to choosing a name for their baby girl. And the future mom insists they won't be changing their minds. "We're sure. We're embroidering it on things," Simpson insists of the name she describes as "nontraditional." "It's nothing shocking and nothing you'll have to add to the dictionary Still, when people hear it, they'll know…why."

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View photos Carter Smith/ELLE More

And with the new baby will surely come more media attention, something Simpson is quite familiar with — explaining her elaborate tactics for shaking off the paparazzi, which involve renting multiple cars and switching them out in various parking garages. But it's not just the media's photographers who have caused trouble for a woman who started her music career as a teenager but rose to even more fame after her infamous reality show "The Newlyweds" debuted in 2003. The MTV series followed the star and then new-husband, former boy band member Nick Lachey (who, coincidentally just announced he and second wife Vanessa Minnillo are expecting, too), and often portrayed Simpson as less-than-the-brightest bulb. Case in point: When Simpson wondered aloud if Chicken of the Sea tuna was made from actual chicken.

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"The thing is, I was just a lot more naive in my life back then," she explains. "I was experiencing a lot of things for the first time, like media and marriage and just…comin' in to my own as a woman. I was this southern, Texas girl who didn't know much comin' into this world," she explains.

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One thing's for sure: Jessica Simpson is happy to be Jessica Simpson. "I know who I am, and you kinda' can't mess with that. I'm a go-with-it girl. I have a blast makin' fun of myself and falling on my face and then getting up again," she shares. "It's so much better than being the cool, deep, tortured artist."

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