Do you need a degree in fashion or journalism to become a fashion journalist?

Hi,

Im 20 and about to start a marketing degree. I recently finished a fashion diploma and i was planning to do fashion marketing but as its extremely competitive i felt that marketing alone would open more doors, just in case. I would really like to do fashion but i am trying to play it safe. I have recently started up a fashion blog and realised that i love writing about fashion and was wondering if becoming a fashion journalist was not so much about the degree but the experience?