I want to work in a fashion magazine but still do not know which is the best university to study about that?

You would probably need a creative arts degree, a journalism degree, or a fashion degree. Try the following colleges and see if you can find something suitable. Try to choose a program that has an internship component – preferably with connections to the fashion industry:

The Art Institute: http://www.artinstitutes.edu/

Emerson College (Boston)

Harvard University (Extension School Journalism Program)

Parsons School of Design

Fashion Institute of Technology

Good luck!