NBD Alter Ego Sweater in Purple. - size M (also in S) NBD Alter Ego Sweater in Purple. - size M (also in S) 45% nylon 35% viscose 20% lurex. Hand wash cold. Metallic threading throughout. Imported. NBDR-WK24. AKK117 H19. For the girl who's the life of the party. For the girl who's always up for a glass of champagne. For the girl who likes to keep her closet as filled with as her social calendar, there's NBD. The young-at-heart line features dresses that every it girl covets and pieces that are sexy, flirty, fun and now.