https://www.mangago.zone/read-manga/queen_cecia_s_shorts/
Modern day fashion designer gets reincarnated into a very sexist medieval society. The queen is very bored of the fashion of her age, and our protagonist comes in to design something ahead of their time! She just has to pretend to be a man to do it, as women would not be permitted such positions. Heads up though, they are very critical of corsets for the reasons that people who know nothing about crosets often cite. Straight romance
https://www.mangago.zone/read-manga/punks_triangle/
Our mc decided to become a fashion designer, after he saw the famous model ai on the runway for the first time. I'm his fashion school, he makes a point to not get along with anyone, to avoid competition, but on a forced group project, he's assigned to a strange classmate (who's secretly Ai!) to win a fashion contest. Bl
https://www.mangago.zone/read-manga/canis/
50%hats and Italian fashion 50% criminal organizations, bl
https://www.mangago.zone/read-manga/runway_hit/
it's bl more focused on romance but uke is a fashion designer
Jojo No Kimyou Na Bouken
(While the manga itself isn't about fashion, the creator was heavily influenced by fashion magazines and such and it really shows in the character designs! He even did a collab with Gucci using his characters. The first part doesn't have much fashion influences, but as you continue reading, the character designs and fashion get better and more extravagant.)
Bless
(This one is more makeup-centered, but I think you'd like it if you like fashion.)
I gotcha darling! Got the list just for that Enjoy dear! https://www.mangago.zone/home/mangalist/2246837/
I love fashion. So ofc I need my media to be like that as well. Any recommendations? It could be mangas, manwhas, manhuas, novels, yt channels, shows, artists, I think you get the point
Preferably fashion that's more masc/androgynous but I honestly don't mind whatever, I just want fashion lmao