This spring, H&M will work with its youngest ever collaborator to create some truly original T-shirts by interacting with H&M customers around the world. André Lorens Stock is an 18 year old from Sweden who is behind the hyped T-shirt label Black Book. André started the label after he printed a T-shirt he’d bought at H&M with his own design. Now, H&M is celebrating his entrepreneurial spirit with an exciting collaboration through H&M.com. André will choose and then customize his favourite prints that are sent in from customers to hm.com from January, with the resulting T-shirts appearing in-store from April.