A long A-line prom dress with a butterfly bodice is a style of formal dress with a fitted bodice and a flowing A-line skirt that expands out from the waist to the hem. The bodice is often form-fitting and has a variety of necklines, including a sweetheart or V-neckline. The bodice's cut, which is similar to the shape of butterfly wings, is what is meant by the phrase "butterfly design." For individuals who prefer a stylish but laid-back appearance, this kind of prom dress is a popular option. The tight bodice and butterfly design emphasize the waist and give the appearance of an hourglass shape, while the A-line skirt is comfortable and flattering on a variety of body shapes.