Celebrating the 40th anniversary of WHAM!'s holiday classic "Last Christmas," Warner Chappell Music, Sony and TikTok partnered to create a "Last Christmas" in-person experience in London's Coal Drops Yard, with WHAM! co-founder Andrew Ridgeley and WHAM! backing vocalists Pepsi and Shirlie in attendance.

The iconic Christmas tune has inspired 18m+ video creations at TikTok, leading to 38 billion views on the platform. "Last Christmas" also has 1.6b streams on Spotify. It returned to #1 on the U.K.'s Official Singles Chart this week.

The Last Christmas Experience—which took place on 12/12—saw a very festive House Gospel Choir surprise shoppers with a new gospel arrangement of "Last Christmas" in front of WHAM!'s Ridgeley, Pepsi and Shirlie, who together led a sing-along of the world famous hit.

Pictured above is a photo from the event. Watch WHAM!'s TikTok featuring "Last Christmas" below.