Using structure, contrast colour blocking outlines this trend and borrows its style from sportswear to create a graphic, visual statement to dresses, jackets, coats and separates. From bold stripes to contrast necklines and hems to striking prints and geometric patterns, details include bound hems to create contrasting outlines, piped hems, contrasting panels, combining differing fabrics such as mesh with stretch jersey. Key shapes remain simple such as shift and body-con dresses, trench coats and jackets, tank and scoop neck tunic tops, relaxed knits, slim line pants and leggings. Colours, for the most part, remain strong and contrasting; black and white, bright red, royal blue and yellow combined with neutral tones of sand and stone plus the odd flash of glossy black and bright metallics. Patterns range from thick stripes to angular shapes alongside pixelated digital prints to Mondrian style block panels.   Spring/Summer 2013 collections that incorporate this key trend: Marc Jacobs, Paul Smith, Peter Pilotto, Michael Kors, Acne, Jonathan Saunders and Jason Wu (as pictured).