I am running out of time to get my BM dresses ordred! I am 18 weeks out and I've been asking them to order them for weeks. The site says 12-16 weeks shipping. Now, we measured them and according to their chart, my size 4 sister needs a 14. My other sister tried on a relatively new sample size 12 and it was almost a perfect fit and they say she needs a 18. That's ridiculous. Does anyone have any insight to their sizing? Anyone use them? Please help, I'm running out of time!