There be 4 categories of Garment Care of Pirate Fashions Garb. It's best to follow the instructions on tag, but if there be no instructions or tag, follow arrr guidelines.
Category 1 - Dry Clean Only
Category 2 - Hand Wash n' Line Dry
Category 3 - Machine Wash in Cold n' Line Dry
Category 4 - Machine Wash n' Dry
Items in Category 3 be: Bloomers, Some of the Men's Shirts, Men's Pants, Kilts, Some Women's Skirts, Linen Sashes
You can clean using a Washing Machine in Cold Water Only then Line Dry Only, no drying in a machine. The main issue is shrinkage. You can purchase some arrrr clothing large and then follow Category 4 in the dryer.