This spring is all about geometry, an unlikely subject for fashion maybe, but when designers take their influence from mathematics, beautiful things can happen. Louis Vuitton cemented the trend on the catwalk, or should we say escalators, back in September with their block squares of neon yellow, white and black. Shops are full of geometric shapes this season, but our favorite is the stripe. ‘A simple pattern’ it may be, but effective too. Look for stripes in monochrome for extra style points.