Ohhhhh....thank you all so much.
Guess what? I wore it already!! We weren't going out, but Mr. Suz and I are alone tonight because our daughter is out, so I wore it for at-home date night!! And guess what? It worked perfectly. It feels SOOOOO comfortable with its relaxed cut and it is super feminine.
I think it might just turn out to be a wildcard workhorse. Mr. Suz said the same. I mentioned a bit of guilt over the purchase because "I don't often wear dresses." To which he said, "Listen, you've worn a dress or skirt 5 times this week that I know of." (He's right, and I actually wore them more than that because I wore skirts twice when I was away doing business with my brother.)
Thanks for all the advice about footwear. It seems as if I have lots of options.
Marley, this is a size 0. As I mentioned, it feels/ felt a wee bit snug on the bust/ back/ underarm area but in wearing it has already eased up there. The rest is a very relaxed fit. It will work brilliantly (in the right size) on a rectangle, slim hourglass, slim pear (whose hips/ thighs are not super large) or IT shape. It would probably be a problem for a busty hourglass.