“I want to wear Red for my prom but mum thinks I will look like a slut. My friends & I disagree that wearing red will make me look like a slut. What can I do to show her that red is nice? After all it is not like these are my wedding ideas!!”
Mothers usually know best. Mothers usually want what is best for their children.
This is not to say that what your friends are saying is not right. However, you mum has more experience in life. I personally would sit down and have a chat with her and perhaps shop around together. After all there are many dresses and many colours and I am sure that together you can come up with a dress you both approve of.
Besides which, isn’t your prom at the end of the scholastic year? You have plenty of time to decide together.