A-Line Simple Zip-Up Bateau Neckline Bridesmaid Dress. A-line bridesmaid dress in satin has a soft flowing knee length skirt. The bateau neckline and the natural waist give a slimming and flattering side silhouette. A perfect dress for almost every body shape. Buy this Dress and Save 10% OFF on Cheap A-Line Simple Zip-Up Bateau Neckline Bridesmaid Dress@FancyLadies.