The "All decked out" activation encourages passers-by to star in a window display, as well as offering discounts and gifts through competitions and arcade machines inside.
Kirsty Hathaway, Refinery29's creative director, said: "Experiential is a really big part of Refinery's DNA. We try to bring experiences and something a little bit different to the audience and try to really connect with them."
The pop-up is running in Soho until 17 December.