The video, uploaded by user clairf86, shows the Australian actress in front of the Superdry store, which closed earlier this year.
The 45-year-old, most famous for her role as Fat Amy in the Pitch Perfect franchise, is seen wearing a cap, a black and white stripey T-shirt, and blue jeans with a microphone.
@clairf86 And the question we’re all asking.. why in the world would u choose The whitgift centre in Croydon?? #croydon #london #rebelwilson #newmovie #fyp @Rebel Wilson ♬ Tears – Sabrina Carpenter
The TikTok video has already scooped up over 3,000 likes.
Reports indicate that Rebel Wilson is filming a project titled Girl Group, which may be a working title.
The Whitgift Centre has not commented on the shopping centre being used as a filming location.
This is not the first time the Whitgift Centre has been used as a filming location.
The Croydon shopping centre has appeared on screen several times over the years, most recently in the 2023 film All of Us Strangers.
It was also featured in an episode of Channel 4 comedy The IT Crowd and even appeared in the title sequence of the classic sitcom Terry and June.
Filmmakers have used the Whitgift Centre for years, attracted by its open spaces and busy high street feel.
Its mix of shops and wide corridors makes it easy to film without shutting the whole centre down.
People can still shop at the Whitgift Centre while filming takes place.