Yes? No?

What do you think? Bueno or no bueno? I've had this dress since last year because I loved the color but haven't worn it because I looked like a blob. Last night I had this bright idea to use a scarf/belt thing I haven't used in forever to give it a little definition. I'm a little slow, ok? I should have thought of this sooner. So, does it work or do I wear it as a moo-moo over my bathing suit? Ignore the terrible tan lines from running. :)