I remember being 15-years-old and my best friend Katie, would always get reprimanded by either her mother or father for her choice in clothes, and she would have to go change. Little did her parents know that she would just bring her choice of clothing with her to school and change in the bathroom. Then after school would change back. Now, looking back at the choice of clothes Katie was choosing, maybe they were a bit risque and most parents wouldn't want their teenage daughter dressing like that.
So, what is a parent to do? It is so important for teens to be able to make their own decisions in regards to how they look. It's important to a teens self esteem to feel empowered. If a parent is picking out their clothes and making them wear clothes that don't feel like them, this can lower their self worth. I certainly wouldn't have wanted my mother picking out my clothes and most teens wouldn't want to wear anything their parents pick out. Imagine, your 75-year-old Grandma buying your clothes and making you wear them. I don't think so. Think about how you would feel all day at work in clothes that weren't you and didn't make you feel good. That is what I'm talking about.
How do we get our teenage girls to look at how they dress and make better choices. I always come back to talking to them about it. If they are dressing provocatively, ask them questions about how they feel when they are wearing clothes that show off their bodies. Ask them about the attention they are receiving and if makes them feel good. Educate them on how boys might view them as "easy" because we are inviting a certain type of guy, with our style. Talk to them about the type of guy they want in their life. When girls show off their bodies to a big degree they are usually more insecure and need a boys attention. A few conversations are going to mend low self esteem, but they will open her eyes to why she might be dressing this way.
Instead of trying to control what she wears, help her develop her self esteem and always make sure you are keeping the lines of communication open. Don't think by sending her back to her room to change that this is a solution, because it's not. Even if she doesn't change back at school, this behavior doesn't help your teens self esteem. If she ends up wearing something she doesn't want to wear, she will act out in other ways to get the attention she needs. Go deeper into the problem, it isn't about the clothes she is wearing. It's why is she wearing those clothes, who's attention is she trying to get and why. This is a fine line, we want them to develop self esteem, and letting them make their own decisions is a part of that process, but most parents wouldn't feel good about letting their teenage daughter dress like a hooker. So, work on the self esteem and the rest will follow.