The Yule Ball is a tradition of the Triwizard Tournament – a chance
for witches and wizards from Hogwarts, Durmstrang, and Beauxbatons to
socialise. The invitation has been designed in glow-in-the-dark print
to emphasise the enchantment of the evening. The intricate design
features swirling patterns, a dancing couple, at the Ice Castle
sculpture which has been contrasted against a gold foil making the
architecture more alluring. Professor McGonagall requests that you
dress to impress and in this T-Shirt she’s sure to approve.