Amazing prom dress in excellent condition. Only worn once. Retails for $450, size 6. The Terry Costa Black Sequins Prom Dress is a stunning and elegant choice for a special occasion like prom. With its sleek black color and intricate sequin detailing, this dress exudes sophistication and glamour. Designed by the reputable brand Terry Costa, this size 6 dress is perfect for a formal event and will surely make the wearer stand out.