Uniform Neckties

I hate wearing school uniforms! It makes me fat. What should I do to look thin in school uniform stupid? I'm not fat or anything, but I look fat in it. (Plz do not say anything stupid, like making a plan, etc..)
My school uniform is a pleated skirt, shirt, tie and shoes usual school. The pleated skirt makes me fat and even the shirt loose. My school is very strict and does not even nail polish or fancy hairstyles! (It's crazy!) How can I look good in that uniform and thin?

Well, there's really nothing you can do about it. However, everyone is required to wear the same uniform, so I'm sure that all girls have the same problem. In addition, you are probably the toughest of your criticism. Chances are, nobody will understand that you do not look thin in your uniform. I would not worry about it.

If you are allowed to wear a seat belt? Maybe you wear a belt around your waist to reduce your silhouette.

Always wear tights, never go bare legged. Stay feminine!