Jon began to tremble as his body began to change. He could feell the pounds being added to him. His skin felt to tight and he was burning up. He placed his hands on his belly which he could feel was getting softer and flabbier. His pecs were loosing thier shape, turning into man tits. There were several loud cracking noises, which Jon felt sure was his bone breaking under the new weight, but they weren't; he was growing shorter until he and Karen were the same size.
Jon's shirt was pulled tight and button after button broke as his belly filled out. He was now as fat as Karen but he was still changing. He felt his ass getting bigger, his hips filling out and as he looked down at his exposed chest he saw to his horror that his breasts were getting bigger until they were a double D cup like Karen's.
Fearing the worst, Jon reached down and sighed with relief as his fingers found his penis and balls still intacked and unchanged. He was now a perfect match of Karen's proportions which, were obviously female.
