You complain about having to wear the clothing, but your girlfriend leaves you with no choice. You are soon swept away into a changing room and told to undress.
"This should be fun," she says as you begin to remove your baggy clothing. You notice her eyes glowing again while you change. You don't notice anything weird until you're completely naked. Breasts start to form on your chest as well as your butt expands. Within seconds, you are fully female; wide hips, c-cup breasts and a slightly pudgy belly.
Your girlfriend hugs you tight,"oh, you look so cute!"
You blush and hug back gently, feeling the odd sensation of your breasts squished against her. You begin to feel another change happening.