Open Back Bridesmaid's Dress

This is from Wednova and the color is dusty rose. Once I get more pictures back from the wedding, I'll include those. It was cleaned afterwards. After spending $140 on the dress/alterations, I didn't want to spend more to fix it, so I cut the bottom part of both stays to make the dress fit better. Instead of sewing it back up, my mom just taped it😶 however, it made the dress fit much better and didn't bother me at all! The website didn't have sizes, but I'm 5'10 and usually wear M/L.