Take a swim to the city of Bubbletucky and join the Bubble Guppies on their fun adventures. The Bubble Guppies Oona Costume for Toddlers lets your daughter become one of her favorite characters from this hit Nick Jr. show. Oona is a sweet and caring mermaid girl. The costume come with a dress that shows off her purple and pink mermaid tail. The included mask features the purple pigtails that Oona wears as well as the pink star clip in the hair. This is the one school that your daughter can't wait to go to. Turn her into one of these Bubble Guppies that are all about learning this Halloween when you get her this Oona costume. Bubble Guppies are much more than mermaids, they're friends.