How can I get a contortionists body?

Ok so did anyone see the Cirque Du Soleil Kooza Contortionists? Ever since then I have dreamed and dreamed about being that flexible and having a body like that. I am not in shape and I have not worked out in like 5 months. But I am ready for a change, and I think I can get there if i start now. I am only 19. What diet and exercises should I do to loose weight and get in shape. And what stretches should I do to become extremely flexible? Please do not be rude or non supportive. This is what I really want. Any tips would be great, thank you so much!!!