Jessica Simpson posted on Twitter a photo of the ample cleavage she showed off while taking her infant daughter for a walk. "Just taking a walk around the block," People.com said the "Fashion Star" mentor tweeted Friday, along with the picture. "Street legal???" In the photo, Simpson is seen wearing sunglasses and a low-cut black top, while pushing a stroller. She gave birth to Maxwell Drew May 1. She is engaged to professional football player Eric Johnson.