When pregnant with 10-month-old daughter Maxwell, Simpson craved mac and cheese and Pop Tarts – and gained 60 pounds. Now the Fashion Star mentor and Weight Watchers spokesperson is all about "healthier, wiser" choices during her second pregnancy. "I'm not really craving as much, [plus] I know how hard it is to get [the weight] off," says Simpson, who welcomed son Ace Knute on June 30. "This time around … I'm like exhausted. Eating Tums. That's my snack of choice."