Trousers by John Zack, Part of a co-ord set, Mix and match, Printed design, High-rise waist, Skinny fit, Cut closely from hips to hem. Turning catwalk styles and red carpet looks into a collection of affordable dream dresses, London label John Zack channels a fun, party girl aesthetic. Look to the John Zack range for party dresses in sleek bodycon styles, bold leopard prints and punchy acid colours.