Following the release of its book Mischievous Nature, IDEA returns to your favourite cheeky Scandinavian creatures, the Moomins, with a collection of tees. First up, this dark green one spotlights Ninny the Invisible Child. A character from Tove Jansson’s beloved books, here, she’s perched wearing the very dress Moominmamma made her, promising to add a touch of whimsy to your casual looks.