All aboard the Hogwarts Express! These Harry Potter fancy dress costumes are essential for any wannabe witch or wizard. Choose robes from any of the four houses, Gryffindor, Hufflepuff, Ravenclaw and Slytherin, or dress up as other characters from the books and films, including Dumbledore, Voldemort and Professor McGonagall - perfect for World Book Day. Throwing a Harry Potter party? Discover our Harry Potter party supplies to add an extra magical touch to your celebrations.