Guess Nikki Navy Sequin & Black Feather Trimmed Open Back Cocktail Dress This Guess Nikki Navy Sequin & Black Feather Trimmed Open Back Cocktail Dress is a size 6. Dazzling sequins adorn the fabric, which is accented by a black feather trim. The open back adds a sultry note to this show-stopping piece. • Size 6 • Navy sequin detail • Black feather trim • Open back design Size: Womens 6 Condition: Pre-Owned Good