A gown

John clumsily knocked down a few dresses from the racks. "Shit!"

In a rush he picked up the nearest one he could find.

John went to pick up the dress. The red fabric shimmered in the light. His heart began to pound. Somewhere in the back of his mind he knew he was in danger, but his body just wasn't reacting.

He touched the dress...

The red fabric of the dress was unfurled like a large ribbon and began latching itself onto John. He tried to fight back but the dress was too strong. It began to wrap around his arms and torso tearing at his clothes. Before he knew it, John was naked as the dress began to finish it's work. First his skin softened and shed itself of body hair. The fabric ran over his head lengthening his brown hair. His body began to shrink and frame became more feminine. Even his face was unrecognizable. Beneath the fabric his shoes had already been replaced with high heels and the void between his legs became apparent.

"Oh no!" she cried out in a high pitched scream.

"Excellent work," said Petra as she appeared out of the sea of dresses. "You will make a great Maid of Honor for your friends."

"What?"

"Yes, you are not quite done yet, but I can apply the finishing touches, my dear."