The Helsi Serena Sweetheart Dress is a showstopper, rendered in stretch, allover- sequin fabric. Featuring a sweetheart neckline, center back zipper, and back-hem slit for ease of movement, this body-con style will be one of the most fondly remembered moments of everyone's evening. The Helsi Serena Sweetheart Dress is a showstopper, rendered in stretch, allover- sequin fabric. Featuring a sweetheart neckline, center back zipper, and back-hem slit for ease of movement, this body-con style will be one of the most fondly remembered moments of everyone's evening. 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.