I don’t see the point in doing men’s vs women’s clothing sizes. Surely there’s a big enough variance in size and shape between individuals that it would be more useful to size based off of measurements of body shape?
Take shoes for example. Why is a uk men’s size 10 so wildly different from a UK women’s size 10?
All it seems to achieve is making shopping for clothes difficult for anyone that doesn’t fit into the expected body shape for their gender and make it hard to find well fitting clothes outside of specialist shops.
Shapes need to be different, as others have already said. So men’s and women’s clothes do need different construction. But sizes could be just measurements. Absolutely. Yes.
Shoes, no. They should all be length in cm and then a narrow, medium, wide, xwide.