Once Mark closed the door to the dressing room, he felt the slick fabric of the suit and smiled. He quickly shed his clothes and unzipped the suit. As he pulled each leg up, the suit felt very tight but seemed to loosen a little after a few moments. As he put his arms through the suit, his arms felt strange, but he persisted. Finally, he reached for the zipper. He already had a stiff cock, and stroked himself lightly. The image in the mirror was very arousing. Mark slowly pulled up the zipper, stopping every few inches to stretch the suit so he could zip it closed. The suit seemed to be several sizes too small, but was stretching to match Mark's frame.
Once the zipper was at the top, Mark smiled and stroked his hard cock though the fabric. As he stroked, the suit became tighter, especially around his cock. Mark sat down on the bench in the dressing room and began to stroke his cock furiously, it felt so intense with the black lycra suit squeezing him while he massaged his cock. It didn't take long, soon Mark was spasming and erupted in a great orgasm. Wave after wave of pleasure seemed to soak his body. His face was beat red in the mirror. He felt his cock unload a huge load, as he kept stroking his cock. Mark felt the suit begin to move around his chest as his nipples became very hard and he could feel the fabric move and carress his chest. Mark watched as he continued to stroke his cock that with each wave of pleasure, his chest would throb with a similar pleasure. He lost track of time as his only thought was to keep stroking and enjoying this wonderful bliss. Mark's chest seem to balloon to a D cup in only moments. Mark's face was contorting itself as his face seemed to be changing, his features softening...more feminine. Mark reached up with his free hand and began to massage one of his nipples, poking out through the tight fabric. Mark let out a soft squeal, as this doubled his pleasure. The sensations were so intense, Mark did not notice his cock was shrinking, rock hard, but shrinking. After some time, Mark's other hand was now fingering a very hard, sensitive clit, and soon after his female face and hair growth stopped, he erupted in his first fully female orgasm.
Mark gazed in the mirror, his face flush, but very beautiful for a woman. His body was fit for a model, yet his new muscles were made for championship swimming. Mark took a few deep breaths, collected himself and stood up. He smiled as he opened the door and showed Dean the new Mark.