Good idea, but execution sucks.
Author's taste for fashion is very surface level and not drawing anything interesting.
It's stuck on the "glamourous" fashion which is one of the most played out ideas ever. I don't want more long and fancy dresses. Show me something else. Show me the ideas that NYC is currently playing around with. Show me Kiko-like things. Shoe me techwear. Show me minimalism and how Scandinavian fashion has evolved beyond just minimalism.
What would make this manga interesting again is if he could look past the superfluous fashion and add what's actually interesting about fashion.