The Helsi Marilyn Square-Neck Sequin Side-Slit Maxi Dress enchants with its shimmering sequins and alluring side slit, creating a romantic and dazzling silhouette for any special occasion. The Helsi Marilyn Square-Neck Sequin Side-Slit Maxi Dress enchants with its shimmering sequins and alluring side slit, creating a romantic and dazzling silhouette for any special occasion. Helsi — a namesake of the founder’s mother, meaning “independent,” “confident,” and “ambitious” — designs hand-crafted, special occasion garments. Focusing on boutique pieces, Helsi’s team of artisans carefully crafts dimensional florals and trims with embroidery, feather, and pearl accents.