Yes, swim dresses with proper breast support for swimwear are definitely a nice option for those women who possess saggy breasts. Most of these dresses come with adjustable straps so that it gets fitted on your body comfortably. Fashion experts always advise purchasing the best swimsuits for sagging breasts that have longline designs (for giving comfort to your shoulder and back) and built-in support and flowy swim dresses with adequate coverage and style have them both.