They've got the dolls, the t-shirts, the duvet covers... heck, they've even got their own range of 'oral hygiene products' so it was only a matter of time before One Direction opened their very own stores to sell their wares.
And now the boys - Harry, Liam, Zayn, Louis and Niall - have done just that by opening 1D World pop-up shops in Canada, Australia and the US - and all just in time for Christmas.
Shop boys: One DIrection
Now, we doubt we'll be seeing any of the lads manning the tills or stocking the shelves (shame) but if you're in Canada, Australia or the US over the festive period you'll be able to get your mitts on the full range of One Direction merchandise - that's over a hundred different items.
And as well as going wild in the aisles, you can sing along with them in the Karaoke studio, leave them a message on one of the shop walls and even take the boys home. Ok, that's not strictly true, but lifesize, 2D, cardboard cutouts of each of the lads can be yours for just $30. Bargain.
Being 'pop-ups' and all that, the stores are only open for the month of December. And if you're a British fan, we have bad news for you - there are no plans to open any 1D World stores in the lads' homeland. Booooo.