formal a line dresses Adora 3147 Pleated Long Slit Prom Dress 16 Occasion Long Satin A Line Burgundy

They differ from ballgowns in that they have a more subtle flare

Black Evening Dresses La Femme 26519 Ruched Jersey Long Gown with V-Neckline La Femme 25206 Long Jersey Dress with Ruching and Cap Sleeves La Femme 29227 Jersey Mother of the Bride Gown with Lace Neckline La Femme 29772 Jersey Long Evening Dress with Short Lace Sleeves La Femme 28051 Tulle Off the Shoulder A-line Dress with Rhinestones La Femme 26955 3/4 Sleeve Long Jersey Dress with Sweetheart Neckline La Femme 23244 Jersey Gown with Knot Detail and Lace Sleeves La Femme 29537 Simply Chic Off the Shoulder Jersey Gown La Femme 28209 Off the Shoulder Jersey Gown with Column Skirt La Femme 32872 Simple Jersey Mermaid Prom Dress with Sweetheart Neckline La Femme 32671 Stretch Satin Prom Dress with Eyelet Detail Neckline La Femme 32843 Strapless Jersey Evening Dress with Unique Corset Top La Femme 32878 Mikado A-line Gown with Lace Detail Neckline La Femme 32733 Chic Jersey Evening Dress with Rhinestone Neckline La Femme 32684 Simple Off the Shoulder Net Jersey Dress with Sheer Waist La Femme 32582 Strapless Satin Dress with Lace Top and Sweetheart Neckline La Femme 32357 Net Jersey Prom Dress with Lace Neckline Detail La Femme 29168 Off the Shoulder Net Jersey Long Dress with Ruching La Femme 28054 Long Sleeve Off The Shoulder Jersey Evening Gown La Femme 32897 Mermaid Metallic Jersey Dress with Draped Neckline La Femme 32910 Stunning Rhinestone Beaded Top Evening Dress with Jersey Skirt La Femme 32804 Chiffon Gown with High Slit and Strapless Lace Top La Femme 32771 Strapless Tulle Evening Dress with Basque Waist and Satin Bodice La Femme 32791 Mermaid Stretch Mikado Evening Dress with Illusion Back

Available in full size range (US0-US30) and incustom size

It was comfortable and stylish and I just loved it

Ross sells them, as well as TJ Maxx and Marshalls and they are usually a good buy, but here are a few I found online (affiliate links used): Fashion Workshop Invitation