Long Blue Prom Ball Gown: CLA1490 Tour Bus Stock Photos, Images and Backgrounds for Free Download. Look like a princess in this long blue prom ball gown A1490 from Andrea and Leo by Cinderella Divine. With multicolored embroidered flowers from the sweetheart neckline to the skirt, this long blue evening gown is a blooming petal in the garden of elegance. The long blue formal dress has a sheer corset that wraps around to the back, while the long ball gown style skirt flows to the floor for a fairytale look at prom, galas, and other black tie events. Step into a world of floral fantasies where every twirl is a dance in the garden of dreams when you make your entrance in this ethereal long blue prom dress that is sure to enchant the crowd.