The "Plus size" is just inexistant. the Size L fits me that I wear a "Normal size M". I bought it for my mum, and I am really sad she can't wear it. The "very precise measurements" are very difficult to understand as "bust" does not help uderstanding the space for breasts.
I love the dress but the large in it is like a size 12ish so was a little to small in the shoulders unfortunately