you can’t put 10 pounds of mud in a five-pound sack...

But in MOST cases, isn’t it just an issue of getting a larger size? Again, I am not trying to be offensive - just trying to understand
Not unless the clothing is remarkably well designed, not generally the case with clothing available in some communities.
The pieces that seem to be bigger in a larger size, is the length, not width.
Some clothing also shrinks a lot, and not in predictable ways!
This is not as common as it used to be, as I still might buy something assuming it will shrink, then it doesn’t!