Women's Clothing Store at The Galleria at 41st Street, Sioux Falls, SD Where to buy prom dresses in Sioux Falls, South Dakota Lovely Backless Yellow Satin V neck Long Evening Prom Dresses, Mermaid MarryLover Yes, I know it's Thursday BUTTTT all of these dresses are on sale!! You can score up to $400 off on our entire inventory! Sioux Falls Apricot Lane Boutique V Neck Two Pieces Backless Beaded Yellow Lace Long Prom Dresses, 2 Pie Shiny Party