Petite dress by John Zack Petite, Worth making plans for, All-over splodge print, Sweetheart neck, Cap sleeves, Zip-back fastening, Regular fit, No surprises, just a classic cut. Turning catwalk styles and red carpet looks into a collection of affordable dream dresses, London label John Zack channels a fun, party girl aesthetic. Now perfectly designed in petite proportions, the John Zack Petite collection is party prepped with jumpsuits, bodycon dresses and lashings of lace.