Alexis Bellino wore a single-strap LBD for 'Extra.' This bandage style dress is a must have! Featuring one shoulder strap, ribbed design, back straps with sequins detailing, and fitted. Rayon/nylon Toast the town in Zac Posen's alluring one-shoulder LBD ? finish with tousled up hair and shoulder-grazing earrings for all-night glamour.