Some fat acceptance activists think it's unfair for companies to charge more for plus-size garments despite the obvious additional costs of producing clothing that's large enough to function as a tarp. They claim to be victims of discrimination because, ceteris paribus, tall sizes don't cost more than regular sizes, and petite sizes don't cost less. Watch me refute this argument and explain what the real "fat tax" is.
The following picture is of a tailor cutting the pieces of a blazer (which comprise that blazer's "pattern") from a length of cloth. The tailor can cut the pattern for a short version of that blazer from the same length of cloth. Doing so would leave more fabric behind, but there wouldn't be enough clearance to cut more pattern pieces, so the yield for a short blazer is the same as that of a regular one. By contrast, a tailor would need more cloth to cut a big and tall version of this blazer, the cost of which passes to the customer.
Pick up a "Plus-Size Model" T-shirt and show your support for pugs and other lapdogs who embrace being fat rather than complain about it.