Costume Designer - Very important in the film industry

The most important thing in a movie is the costume that the characters will going to use in the film. Costume designers are the ones who create the character's costume , they have to use their imagination to create something new and according to the role of the character.
Before creating the costumes the designer need to read the role of the character in the movie , the things that the character like , the personality ,etc. why? because to create a costume it has to be according to the character and also to the personalit for example Ashley is a girl that study alot , she spend her time searching new information and she doesn't has friend because everybody consider her as an nerd ,So the costume desginer has to create an normal costume NOT a fashion clothe because is a nerd.
so the role of the costume designers it's not easy they have also to read to create the perfect costume .