Covered throughout with rainbow heart motifs in brilliant shades of red, blue, orange, and yellow, this vintage-inspired black dress from UK brand Collectif will light up any room. Made from a stretchy cotton fabric, this retro-chic A-line dress features contrasting white detailing at the cuffs of the short sleeves and the point collar, with white button-up closure at the fitted bodice. A removable white belt cinches the high waist of this stylish fit-and-flare dress, and the midi skirt is complete with handy side pockets.