I took their advise and ordered a size up. It turns out quite well and there is so much I love about the dress. The color I picked is a little off their color chart online, but is perfect for my lovely granddaughter's wedding. I only have to take in the shoulders a bit, otherwise it is perfect.
The dress and the color- Steel blue- are beautiful. Even though I gave my exact measurements, the dress was a touch snug around the bust (might have added a little extra to the bust area), but elsewhere it fits beautifully. I'm getting the straps reduced by 1 inch . Overall, it's a lovely dress that I'm looking forward to wearing to my granddaughter's wedding soon.