I highly doubt Fif got anything to do with this show but I could be wrong. I would say the show runner should be in charge of that stuff.Whoever does fashion, sets, and props for this show is a fucking genius. The wardrobe is on point, haircuts, hairstyles, make-up, and even the facial hair period correct (niggas walking around with mustaches, no goatees, and beards like today). You are immersed in the early 90s in this show.
I also tend to wonder if it's period accuracy is because 50 Cent himself was a teenager during this period and maybe he pushes hard for it to be accurate.