You stop just outside the doors to the dressing rooms, doubt holding your heart.
If, and only IF everything that guy said is true... What if something goes wrong? If this costume does something to your body, or if drugs are involved or something wrong... you could be damaged in the long run.
You start to turn around when the costume squirms violently in your hands!! You stumble and fight to retain your balance as the costume whips and lashes out.
The hand of the costume sticks itself outward and spreads open its palm like a real hand. Under the forearm is an open seam, the beginning of which is somewhere in the tangled squirming costume. Without warning, the hand streaks towards your own hand holding the costume. It forces itself over your own hand and starts to heat up.
You unfreeze and open your mouth to yell, when your own gloved hand shoots up and covers your mouth. You try screaming anyway, but the glove is bigger than even a normal man's hand. You feel your bones and fingers twitching inside the glove as heat burns through the veins of the taken arm. The glove begins to push and pull on your hands and fingers. They start to stretch and fill every space in the glove. On your face, its starting to feel less like rubber and more like skin. Soon, you can actually feel your face, your mouth, your nose, as though it were your own hand. It even looks real, the only distinguishing factor being that its a huge, veiny man's hand with a completely different skintone. The still-open and rubber forearm seems attached to your changed hand, and is suspended between your hand and the twitching costume.
You start to turn towards the front of the shop. Maybe if you run out, someone can help you pull this off!