It's cheap and easy to return so you may as well order it and return it.
I'm not a big fan, It looks a bit like a heritage nurses uniform that needs a pinny going over it and I can imagine it looking awful when it creased as well as being quite severe in cut and colour. I like the idea but think the cut is too severe to ever give off that effortless vintage effortless prettiness.
I'd look at Sezane (the megan dress is pretty), Anthropologie, the Ghost bridal collection etc and see what you think.
Right time of year for white/cream dresses though OP so you should be spoiled for choice!