By Tim Hanlon A mum named ‘Miss Slinky 2024’ after losing seven and a half stone has described the moment she realised she needed to change – and it happened at a beach party. Leanne Hemming, 40, from Cornwall, was given the Slimming World gong and says she now feels a lot healthier after shedding the weight -and added she is the “first one out of my chair” at a party nowadays. She decided to join her local Slimming World group after attending her aunt’s 60th. “When I was at my heaviest I constantly felt tired – even standing up was hard work. I tried to enjoy myself at the party, but I felt s…