Belted looks better to me.
However it all depends on how you want to define your figure - some guys / girls like the "hourglass style shape a belt can give a figure, others don't. So what do you like to look like - shapely where the belt defines your hips and breasts or more A shaped without the belt. Your not overweight so both work. It is all down to your preference of what you are trying to say about your body shape statement. But hey, I'm a 61 year old and a guy, so my tastes will naturally be towards the belted look as this is what my younger generation liked - ie shapely women that had figures rather than the later Twiggy, straight up and down, boy look. In your case your case there is no boy look as you are broad shouldered and that gives the more A shape.
Hope this helps. Good luck with your choice. I chose the one I liked 42 years ago and we are still married, so it worked for her (and me - LOL).