Sofia The First - Season 3

Sofia The First is an American computer-animated television series that features a commoner joining the royal family as a princess. In the beginning of season 3, The Royal Family is having a picnic in Merroway Cove and Sofia gets the idea to throw a party for the merpeople. And a merboy, Fluke, becomes jealous of Sofia for receiving so much attention because of her heroics during her last visit.