That old throw cover she’s wearing may look like a plastic tarp from Harbor Freight, but I’d bet it’s from some designer, and had a price tag north of $500.
I’m overweight and wear dresses because they aren’t clingy and are far more comfortable.
Any two dollar rag I bought at a thrift store(and yes, I’ve bought a few I resent paying over ten dollars for anything)would look better than what she’s wearing.