Union Station (Formerly known as Little Borrowed Dress) is a bridesmaid dress rental company that runs to size 16/18. At the time of my cousin’s wedding, I was a size 20 and had to purchase the dress (for $150!!) and get it altered to size 20 (another $80!!). Only wore the dress for 5 hours! It comes in the Union Station garment bag and will ship via flat rate USPS Priority Mail for $18.85.
Here is the information about the dress from the Union Station website https://www.unionstation.com/bridesmaid-dresses/short-one-shoulder-catherine-style:
A one-shoulder neckline adds romantic flair to a classic, elegant silhouette, featuring a flattering fitted waist and flowy skirt.
Plus, we’ve added a bit of elastic at the back and an adjustable shoulder tie for the perfect fit. This dress is made of crinkle chiffon and is fully lined. Side zipper. Falls above knee, measures 37 inches from high point shoulder to hem (measured on a size 4/6).