Disney Flower Girl Dresses Pegeen Disney Little Mermaid Ariel Pink Dress Costume Adult Womens L Pink Fun Costumes We're throwing a princess themed birthday party for your internet niece, and she's been absolutely obsessed with Disney princesses lately. Now the big question iswhich pink princess dress should she wear to the Pirate night is so much fun on Disney cruises! I always get my kids costumes on clearance after Halloween. Its fun to get dressed up and go see all the characters in their cute pirate night outfits.