• JESSICA SIMPSON photo | Jessica Simpson

Credit: From left: Bruja/Pacific Coast News; Pacific Coast News

Published: Thursday December 18, 2014 18:00 PM EST



Date night was a great incentive for Simpson, who slipped into a curve-hugging black dress for an Oct. 31 dinner in L.A. with fiancé Eric Johnson. The Weight Watchers spokesperson welcomed her second child – son Ace – in June. And though she's now back in her skinny jeans, the star says becoming a mom has changed her "perspective completely." "Raising [daughter] Maxwell makes me realize that I don't want her to see me beat myself up for things like food choices or numbers on a scale," she wrote on her Parents.com blog.