Graphic tees are having a huge moment on the high street. (Picture: Metro/Getty) Metro journalists select and curate the products that feature on our site. If you make a purchase via links on this page we will earn commission – learn more Summer is on its way (hooray), which means it’s time to pack away the thick layers and heavy fabrics until next season, and embrace the sunshine and warmer temperatures with more colourful, lighter options. One…