TheChicGeek took a trip to sunny Marrakech to see the new YSL Museum - read more here - while there, he thought it rude not to show you one of the big trends of the 2018 season - Vertical Stripes. Think 'stylish deckchair', designers such as Marni, Balmain, Etudes, Haider Ackermann, Paul Smith, Cerruti 1881 and Ami all did their vertical variations on the trend. With the Jardin Marjorelle as the backdrop, bold vertical stripes are not only a statement, but they elongate the wearer. Don't be scared, you can clash them, as seen here, just make sure they're wide…