Plus-size dress by John Zack Plus, Dress for the mood you want, right?, Plunge neck, Wrap front, Colour-block design, When one colour just won't do, High split, Bodycon fit, Skims in all the right places. 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.