(Kudos to The_Guest I like the story just wanted to change a few things in yours, like if the clothing didn't change to fit so much, only enough so that it wouldn't fall off)
He walked into an apartment building. He'd passed by it, but never entered, but the building door gave no resistance, nor did the door to Apartment 2B.
He looked around. It was a small one-bedroom with a combined living room and kitchen, and a separate bedroom.
Jon entered the bedroom as if he owned it. He felt dizzy and confused, but he had this odd feeling of ownership as he entered. As if it was all right.
He dropped the towel and slipped to the underwear drawer. He slid his penis between his legs and slipped on a pair of panties. They were definately snug but not entirely uncomfortable.
Jon felt numb and confused. Part of him knew that this wasn't right, panties weren't the underwear he should be wearing but another part told him it was normal, and that he wore these every day.
He found a bra in the closet, and, even knowing there was no point in wearing one with his male chest, was still unable to resist. The bra slipped on. and he adjusted it so it would be comfortable
Piece by piece, he donned a skirt and a top, styled his short hair as best he could, and put on makeup and even perfume. He felt less and less Jon-like with every moment. Looking in the mirror, he was still himself, mostly atleast, his body may have changed a bit more curvy, soft and feminine, but still all man.
Jon found a purse and slung it over his shoulder, completing the ensemble, and suddenly blinked, released from his enslavement to the terms of the wish.
But a new enslavement came. That of obligation. He knew he had to get to his job, even though he was aware it hadn't been his responsibility till then.
Lydia Warren, Mikey's teacher, was out for her morning jog. The morning was perfect, not too hot, not too cold, a nice breeze that she reveled in. Suddenly, without warning, something happened in her focus. She lost track of what she was doing. Something felt wrong.
She stopped her jog, and shook her head, trying to clear the cobwebs. Suddenly, with absolute clarity, she turned up the sidewalk to the nearest house and walked in as if she owned the place, unsure of what she was doing and unable to stop. Inside was a family eating breakfast. They didn't look up at Lydia, who passed by the dining room on her way to the bedrooms, where she knew something awaited her.
In the hallway, she pushed open the door to one of the rooms and saw...
