Got a bridesmaid dress that was measured for me....

Got a bridesmaid dress that was measured for me. It is about 2 sizes too big, now I am stuck getting the WHOLE dress altered. The dress falls off of me. The lady had one job. I also wasn t the only one in the bridal party to have this issue (some are way too big some are too tight). Ridiculous. They should learn how to take measurements correctly.