Plus-size dress by John Zack Plus, For that thing you RSVPd to, Fully lined, Off-shoulder neck, Ruffle trims with contrast tipping, Hello, frill seekers, Zip back, Slim fit, A narrow cut that that sits close to the body. Turning catwalk styles and red-carpet looks into a collection of next-level dresses, London label John Zack preps you for the party. Fall for its plus-size range of lace, ruffle and cold-shoulder maxi styles.