I'm pretty sure that the future of fashion has custom-tailored clothes sold on a mass level in store for it.
So, what does that mean? To participate in this not yet invented market, you're going to need precise and detailed measurements of your frame. I see a universal scale being created with maybe 30-35 body measurements. And if you have that information, you'll be able to order custom-fit clothes from any customer clothing manufacturer who offers it.
So, we're going to need an industry of professional fitters. Charge $50 for a 1/2 hour session and that person will be instantly ready to buy custom-fit clothes with confidence.
Plus, every time the customer gets fatter, they'll need to come in for a re-fit. This can't miss.