Black paint & red shoes

Who decides what clothing is in each season? Is the select few with the ultimate creative vision? I think I may have been one of these few at age 8. I designed some hot kimono-inspired dresses and Sgt. Pepper-esque capri sets on my Barbie fashion sketcher (complete with textured rub sheet for creating prints). This was before someone else told me what was cool and who’s name I needed on my jeans.