The legendary purveyors of Tokyo trends, Shibuya 109 have made so-hot-right-now South Korean boy band BTS the faces of their Christmas campaign, which is succinctly named ‘BTS 109 Xmas’.

The pop-up store is located on the 8th floor of the intimidating tower of fashion and will run until Christmas Day (that’s 25th in Japan). 109’s other branches in Fukuoka, Abeno and Kagoshima will also get a limited run of the pop-up shop.

Exclusive BTS merchandise can be bought including stickers, magnets, key chains and notebooks. If you've ever wanted rest your face on all seven members' faces simultaneously, the BTS cushion cover will set you back nearly $40 (3800 yen).

Visitors to the store between 18th and 25th December who spend over 3000 yen will receive a free novelty BTS trading card, but beware, there’s only a limited amount. There’s also chances to win signed goods through a lottery and social media campaign.

Inside the mall, shoppers can enjoy a preview of the group’s new Japanese single, Crystal Snow. The store exterior has been given a Bangtan makeover which the Japanese faction of the 'Army' (the collective name for BTS fans) were quick to take advantage of.

Fans can also send their own festive message to their beloved idols by submitting it on a card in store. The messages will be compiled after the 15th December into a book to be sent to the group in time for Christmas.

Shibuya 109 have long been at the forefront of trends for young Tokyoite women and their timing for this collaboration couldn't be better. After their wins at the American Music Awards and Mnet Asian Music Awards, BTS are the boy band on everyone's lips and maybe soon on everyone's cushions...