The Pirate Skin is an alternate skin for Penelope in Sly Cooper: Age of Thieves. Penelope can wear this if fifteen Secret Penelope Masks are collected.
Description[]
"Back when the Cooper Gang went to Blood Bath Bay, an ambitious pirate named Captain LeFwee kidnapped Penelope with the intention of marrying her. Forcing her to wear a pirate-themed dress, Penelope later battled LeFwee in it after Bentley rescued her. Needless to say, her experiences in the Caribbean may have had an effect on the time period she chose to invade later..."