As ubiquitous as the brand name itself, Burberry’s plaid check dates back to the late 1910s, when it first lined their trench coats. It was trademarked in 1921. As chief creative officer Christopher Bailey steps down after 17 years with Burberry—a period of time during which he made the heritage brand a global powerhouse and a fit for generations to come—his last gift happens to be a rainbow check pattern. It will be incorporated into his last collection, debuting during London Fashion Week. It’s “dedicated to—and in support of—some of the best and brightest organizations supporting LGBTQ+ youth around the world,” he explains. Read a full timeline of the Burberry signature pattern over at the Guardian.