Size 0: Bust 31.5", Waist 23", Hips 34.5"
Size 2: Bust 32.5", Waist 24", Hips 35.5"
Size 4: Bust 33.5", Waist 25", Hips 36.5"
Size 6: Bust 34.5", Waist 26", Hips 37.5"
Size 8: Bust 35.5", Waist 27", Hips 38.5"
Size 10: Bust 36.5", Waist 28", Hips 39.5"
Size 12: Bust 38", Waist 29.5", Hips 41"
Size 14: Bust 39.5", Waist 31", Hips 42.5"
Size 16: Bust 41", Waist 32.5", Hips 44"
Size 18: Bust 43", Waist 34.5", Hips 46"
Size 20: Bust 45", Waist 36.5", Hips 48"
Keep in mind that these measurements are just a guide, and it's always best to have your bridesmaids try on dresses in person or order a size up if they are in between sizes. It's also important to consider alterations, as most dresses will need to be hemmed or taken in to ensure a perfect fit.
807 × 661
Source:https://support.bellamerabridal.com/hc/en-us/articles/231928627-Dessy-Size-Chart-After-Six-Size-Chart-Alfred-Sung-Size-Chart-Lela-Rose-Size-Chart-Dessy-Junior-and-Dessy-Flower-Girl-Size-Charts
694 × 560
Source:https://www.marryandtuxbridal.com/christina-wu-size-chart.html
814 × 1721
Source:https://www.meetjen.com/pages/size-chart
268 × 708
Source:https://www.kemedress.com/size-chart/
768 × 722
Source:https://www.marabellabridal.com/pages/size-chart
1000 × 1484
Source:https://www.amazon.com/Kismissal-Asymmetrical-Bridesmaid-Dresses-Cascading/dp/B0CBKFYFT4
370 × 560
Source:https://www.pinterest.com/pin/wedding-dress-size-chart--39617671712563273/
327 × 736
Source:https://www.pinterest.com/pin/davids-bridal-sizing-chart--388998486573861630/
861 × 828
Source:https://www.ebay.com/itm/165108141631
205 × 647
Source:https://www.bustlebatonrouge.com/alfred-sung-size-chart