The 31-year-old model has a number of different ways of to stay in shape, but admits former rugby star Thom Evans wasn`t the best choice of opponent in a fighting class. She said: "I do Pilates, ride my bike and swim in my pool. "I went to a boxing class with my boyfriend, but he kept jabbing me when the tutor wasn`t looking." Kelly is happy with her body and wouldn`t undergo any cosmetic surgery to alter her shape. She told Now magazine: "I`m curvy so it suits my face to have a far bum. When I`m skinny my face looks haggard. "No, I wouldn`t have surgery. Some of my friends have had boob jobs and to be honest, I feel lucky because I`ve always had boobs. I love big boobs. I can`t imagine my body any other way. "I have more idea of what I want now. I`m more confident. I think it`s good to grow old gracefully."