It looks like a ditsy tennis dress. I think it's one of those dresses that photographed well looks ok, but then you see someone wearing it and you think ' oh dear...'
Caveats:
If you have a small chest ( no bra)
Great legs
Tan
-then it's doable. But I have very stringent ideas (being a shot fat person) as to what people with better figures than me should wear, because I end up thinking Oh you could wear anything, why did you choose that?