Slight hijack
This OP isn’t one in which the entire worth/unworthiness of the person themselves is based on their size.
That is what raises the ire of the “fat police” (can’t understand why people haven’t gotten the difference after all those meltdowns), not mere mentions of overweight, or out of shape.
Nothing wrong with saying “Oh, NO honey, just say no”!!! To someone who isn’t dressing to their best advantage. Whether that person be too thin (tank tops? huh uh, cadaverous arms tank tops just weren’t made for you) or too overweight, or too chesty or whatever.