Tracy was at the mall, where she is pretty much everyday. She was afforded luxury since she was little as her parents were the richest people in the city and she had pretty much everything. This of course led her to believe she was the be all end all of what a person should be, and thus she was quite the bitch. Ironic considering what was about to happen.
Tracy was in the changing rooms trying on a new thong. She looked into the mirror and looked at her magnificent ass and then put on a new bra and admired her luscious C-cup breasts. "God, I'm the hottest thing of two legs."
Tracy was so enchanted by her good looks she didn't heat the screams and barks coming from outside the dressing room as other people transformed into dog-like humans.
As she looked in the mirror, she noticed she had seemed to shrink a bit. That's odd, she thought. Then she felt pain in her stomach and dropped down to all fours. She could feel her insides churning and she looked in the mirror and was surprised by what she was seeing. Her arms had started to shorten as her hands transformed into feet. She screamed, but soon her screams were changed to whines and barks. She saw as her beautiful breasts shrunk away, her new bra hanging loose on her frame. Her nipples remained and new sets grew down her belly. Then she felt something right above her bubble butt and turned with her ass facing the mirror. She watched as her vertebrae grew longer and she now had a human tail about a foot long. Her ass checks remained as full as they had been if not fuller, but she could feel her butthole climb higher up her crack and watched as her vagina took its new place in the crack of her ass so she could be taken from behind. The last transformation was her now back legs as they shrunk to the same size as her former arms and the transformation was complete.
Tracy looked in the mirror with fear as she went over her new body. Her head was pretty much unchanged, but she could no longer speak. Her beautiful breasts were gone, replaced by rows of nipples. Her arms and legs were like a dogs except with human-like feet. Her thong was still on her. Even though it still fit it was awkward. She was now a human-dog.
She thought, "What happened? Will I ever be able to wear clothes again?"