Kirstie Alley has had weight gain and weight loss yo yo dieting habits for a while now. The first before and after photo below shows her when she was at her top weight. But, her recent weight loss success was an estimated 50 pounds. She says her weight problems have always been due to eating too much candy and pop. But, when she cuts it out of her diet she's able to control her food cravings. Hopefully she can keep the weight off this time.