I'm still a man, so if I do this, I'm sticking to normal, I'm not going full on girly girl.
You step in front of one of the suits on the wall. It has long, jet black hair, erupting from a baseball cap. Pale skin with freckles on its arms. A cute face, just one lacking any kind of makeup. A white t-shirt paired with a thin, brown cardigan and skinny jeans. It wore white socks inside of its black converse. It was technically a girl. Enough for this experiment at least.
You take care as to not damge it as you carry it to the changing room.
You take your time putting it on, you find it surprisingly comfy to wear. Maybe not as an everyday thing, just in the fall and late summer.
In the mirror you see the shy cuteness typically seen hugging the hallways at school. You do little expressions with your new face: a wink, a smile, you blow a kiss, wait. Okay, you're still a guy, remember that.
You exit the changing room before you do anything else wierd.
"Ahem, miss." The shopkeep stopped me. "You have to pay for that."
You were still wearing the skinsuit. It just seemed... normal to you. Like you were always like this.
"Oh, sorry." 'Giggle' why did you just giggle? "How much do I owe you?" You reached into your wallet.
"$250 for the purchase. Have fun kid." The shop keep pulled a newspaper out of the desk and read it, ignoring you.
You left the store, still wearing the suit. You got several looks from boys on the way to your car, it was strangely comforting.