* "Style" is the most common translation, reflecting the overall look and attitude. You could say "Li gen style" (He/She has style).
* "Panache" is a good alternative, emphasizing confidence and flair. You could say "Li gen panache" (He/She has panache).
* "Chouchou" means "favorite" or "darling" and could be used in a playful way to express someone's attractiveness. You could say "Ou se chouchou mwen" (You are my darling).
* "Fresh" is used to describe someone who is stylish and trendy. You could say "Ou gade byen fresh" (You look very fresh).
Ultimately, the best way to express "swag" in Haitian Creole depends on the specific context and meaning you want to convey.