Just after shouting at her, you realize it's not the best thing to do to someone who can change your clothes on a whim. Your sister expression changes abruptly and looks at you with a hint of seriousness on her face.
"... please?" you add, trying to calm down.
"I was thinking of changing you back, but after this I'm not really sure that I should do that. The stockings and the heels look good on you, I'm sure the people are going to love your new look!"
"NO! Please, I will do anything!" you plead at her.
"Well, maybe you will or maybe you won't, I have no way of know for sure, so better leave this as it" she says, and turns back to the door. You stare at her with anger and you couldn't help charging at her. However, your footwear it's not the best for running after someone and your sister dodges you with ease. The next second, you trip and fall directly on your face. You let out a curse angrily and try to get on your feet again but you don't seem able of moving them. You look at your feet, seeing why: both shoes look like their sides somehow fused together, and you can't separate your feet no matter how much you try.
You look up at your sister as she walks out of your bedroom, when you notice pressure building up on your wrists. In seconds, some fabric appears out of thin air on them, your wrists come closer to each other and finally both bands entwin, tying them up. You try to broke yourself free, but it's no use.
"Undo it, bitch! Change me back or..." you shout at her
"Or what?" laugh your sister, "In fact, I just had and idea, don't move" she says as she disappears in the hallway.
You try to get up, but you end up sitting on the floor, not even able to get on your feet. A few moments later your sister comes back, holding something. You peek into her hands, trying to figure out what the hell it is, but as she enters your room she says "Smile!" and a bright light blinds you... she just took a photo of you!
"No, stop!" you cry out, trying to cover yourself up as she takes another one.
"This will look great all over your school" she says, taking another photo, "Unless..."
"Please, don't do it, just... please..." you manage to say, thinking of what would happen if your are discovered like this. You don't really have many friends, and some people sure don't like you. All you have there is some sort of reputation and you have done well by far, but this would ruin everything!
"Do you remember what did you called me yesterday?" ask your sister, "You called me "slut"! In front of my friends!"
"What? Oh... Look, I'm sorry!" you try to tell her, but it's too late and you can feel the clothes moving and twirling into new shapes. First, the dress splits in two parts at the waist and begins to shrink. The lower part begins to recede up your legs while it fades to bright pink until it changes into a pink miniskirt. The upper part shrinks until it forms a top with plenty of cleavage that barely covers the strapless bra you are wearing. Next, you feel the thong tightening even more as the waistband rest on your hips, sticking out from the sides of the skirt. Your stockings disappear at the same time the stilletto heels change briefly becoming pink heeled strappy sandals. Finally, a white low-cut jacket appears over your top and you feel large hoop earrings hanging from your ears.
"Well, who looks like a slut now?" your sister laughs, taking more photos. You blush furiously again, but you notice that your "ties" have vanished and you get up. Your sister quickly adds "I won't try anything foolish if I were you, Andy... Not if you don't want me to make it worse" and she closes her eyes for a moment. The next second, the heels of the sandals grow several inches, making even standing up difficult. Staggering, your try to get to your bed, but you fall on your knees before reaching it.
Humiliated and at your sister mercy, you just give up, "Please, I'm very sorry and I didn't mean it, just stop..."
"Ok, it's the one in the morning anyway, and you can't go to bed like this"
You feel the clothes just vanishing and sigh, watching relieved how they disappear until only the thong remains. You wait eagerly for it to go away, but nothings happens.
"What...?" you say, but your sister cut you out.
"That should act as a reminder to you... See you tomorrow, Andy" says her with a grin, before exiting your room and leaving you alone.
Really pissed off, you put some of your clothes on and go to bed, thinking of that bastard of the shop where you got the clothes and how to get back at your sister once you are done with him.