This might be ok for other functions if you have time to try on etc, but avoid for weddings at all costs if your bridesmaids are not perfect size 2s. Out of 5 bridesmaids, the only one without issues was a size 4, all other girls had horrid fit issues, zipper splitting issues, and honestly just the hassle you do not need to deal with before your big day (especially destination weddings where you can't try on beforehand).
Anyways, awful experience, caused a lot of grief for the wedding, essentially ruined the eve before the wedding as the bride, and all bridesmaids were frantic about what to wear on the next day (in a destination wedding location without much formal gown options).
In the end, 3 bridesmaids had to wear backup dresses, and 1 had to squeeze into a dress which was too tight. (all girls ordered their normal size, and according to the measurement guides provided by the company)