Modifier: said woman has just discovered a friend's corpse, so is shocked and grieving. It's the middle of the night, she's in sweats, and isn't trying to look sexy / attractive. But I think my protagonist guy would notice her body positively anyway.
I think I know a variety of ways how a woman (in America today) might see another woman of that size, or even more accurately, how a woman of that size might see herself. But I'm not sure how an average guy would.
(Maybe I need to go re-read some Jennifer Cruisie. I feel like she does this well in Bet Me, and maybe in Faking It too, if I'm remembering right.)