You guys should look up Sophie Reade from big brother...she gained sure a bit of weight over the course of the show and even did a few photo shoots with the new weight. It's a great progression
It might also be worth looking up Stefany Hohnjec... Most of the stuff about her isn't in english, but she was a gymnast who, uhm, got quite curvy after she quit.
She was on some czech version of big brother I think.