La DoubleJ La DoubleJ - La DoubleJ is a wordplay deriving from founder JJ Martin's name that portrays her confident nature, a quality that's also imprinted into this multicoloured Persephone maxi dress. It's crafted in Italy from pure silk with puffed sleeves, a low-cut V-neck and a full skirt enhanced by waist pleats. Let the vibrant floral pattern take centre stage by teaming it with understated accessories.