This is exactly the kind of maxi shape I love -- streamlined -- and I think the fit, print, and colors look great on you.
Do you need the belt to add shape? I don't know that it's adding anything. I might try without (could be cooler, temp wise) or look for a wider belt.
Anyway, I'm "if you'd wear it, buy it." I have a couple (one ancient!) and I wear mine around for casual errands or eating out. Maxis = sun protection + style in my world, ha. This one looks super-easy to dress up or down to me.