We first saw Demi Moore naked, sporting her pregnancy on the cover of Vanity Fair 20 years ago causing some of our favorite mom-to-be celebs to follow in her footsteps. From Christina Aguilera, Mariah Carey, Nia Long, Claudia Schiffer and Brittany Spears to name a few, our new moms are cupping their tummys as they pose for various magazines and glow with new life. So, it's no surprise that we can catch Jessica Simpson rockin' her baby bump on the cover of Elle for the April 2012 issue.