Gogglebox star Amy Tapper has opened up on her three stone weight loss after overhauling her lifestyle.The 20-year-old, who has dropped down to a size 20 from a size 26, opened up on her decision to start going to the gym and making better decisions with her diet during an appearance on Lorraine on Friday.The Celebs Go Dating star opened up on how exercising has “changed her mentally” after losing six inches off her waist.