Louisiana will make headlines in Washington this week, but not for political reasons. Thursday, June 11, is National Seersucker Day, paying tribute to the distinctive all-cotton fabric that was made fashionable in New Orleans. In 1909, local clothier Joseph Haspel Sr. used the lightweight cloth, which at the time was commonly worn by laborers, to design a suit (with now-familiar blue and white stripes) that could be worn by Southern gentlemen in the hottest part of summer. The company, now run by Haspel's great-granddaughter, claims that well-dressed men including actors Gregory Peck and Cary Grant wore Haspel suits, along with nearly every U.S. president since Calvin Coolidge. The modern practice of wearing seersucker on Capitol Hill was introduced by Mississippi Sen. Trent Lott in 1996, but faded away in 2012. Louisiana's Bill Cassidy reintroduced the idea while serving in Congress in 2014 and this year, the senator has called for the iconic Crescent City fabric to be honored again by lawmakers wearing seersucker on June 11.