No, Jessica Simpson's not pregnant, but Nick Lachey is likely to start kissing his wife's tummy a little more in the new year. That's thanks to the pop starlet's new belly-button fragrance, made from pheromones, aromatic chemical compounds naturally emitted by humans that can act as an aphrodisiac. The perfume is part of D'lish Fragrance Inc.'s upcoming Dessert, a body-care line Simpson helped create. Due in Sephora stores nationwide in April, the line will also feature whipped body cream, chocolate body gloss, powdered sugar body shimmer, lip-plumping fragrance, bath bubbles, and hair and body treatments. All of the items are...