Although jack sparrow may be the Captain of the Black Pearl in disney's pirates of the Caribbean: At World's End, were it not for the loyal will turner, he might still be in the belly of the Kraken. A Captain in his own right (although not necessarily by voluntary means) of the Flying Dutchman, Will is a worthy costuming choice. Dress as the former blacksmith and son of the pirate, Bootstrap Bill Turner with a white peasant shirt, lace-up vest and pants. Add your own pants, a swashbuckling sword, and some boot covers and you'll be set to swashbuckle in no time!
Never to be underestimated is elizabeth swann, the lovely daughter of the good Governor Weatherby, beloved of will turner, and the only woman ever to be chosen as a pirate King. It's up to you whether you choose to dress as Elizabeth in her sea-faring pirate look (which comes with a white shirt with attached red "velvet" vest and belt with an extra-large buckle, pants, boot covers, and a black pirate hat), or her more demure, long, white gown with gold "brocade" trim details.