I'm 5'10, broad in the shoulders but proportioned and I ordered the white crochet lace as a coverup for a recent trip to Kauai. It was a bit tight I would say in the collarbone/shoulder area...like the skinny shoulder straps were too short for me. The rest of the dress was baggier than I would have wanted, more like a tent and shorter than preferred but it was too late to return and I made do. There was lots of extra material but ordering a M would be even worst in length and shoulders.