Using Instagram to promote the fact you have a big anniversary sale coming up is one thing, taking inspiration from that idea and recreating it as a 14,000-square-foot 3D installation in real-life, is quite another.

But that’s what Nordstrom did on the roof of its flagship Seattle store last week.

Celebrating the launch of its #NSale, the post is comprised of a 55-foot re-creation of a “Leith leopard-print body-con dress”, hanging on a 25-foot-long hanger built by Nordstrom’s visual team. It was pieced together using 400 yards of fabric and real wood for the hanger.

The “massive feat of ‘gramming”, as the team refers to it, was captured by drones and broadcast live via Periscope, as well as pulled together in the below time-lapse video.