Mommy's night out! Jessica Simpson got all glammed up to go to dinner with her family on Tuesday, Sept. 24. The 33-year-old mother of two flaunted her sexy post-baby body while enjoying a night out nearly three months after son Ace's birth. The former Fashion Star mentor was spotted leaving Sagebrush Cantina in Calabas, Calif. with fiance Eric Johnson and 16-month-old daughter Maxwell. Simpson looked looked gorgeous and slimmed down in an all black ensemble of a blazer, shirt and skinny pants. She showed off her curves and flaunted her cleavage in the low-cut top, and accessorized with dark shades and a black handbag. Johnson, 34, dressed more casually in a plaid dress shirt, dark jeans and brown boots. He carried daughter Maxwell, who looked adorable in a pink dress, while leaving the restaurant. Baby Ace appeared to have been left at home for the outing.