The Blue Crush star performs a rendition of Winter Wonderland in the advert, which was directed by her filmmaker fiance Michael Polish.
The promo was inspired by Michelle Pfeiffer's famous piano scene in 1989 film The Fabulous Baker Boys, and Bosworth was delighted to shoot the campaign for Sir Philip Green's British fashion house.
Bosworth says, ""This project brings together two important aspects of my life: cinema and fashion. I have always been a fan of the Topshop brand and it has been an honour to work with Sir Phillip and the team. I hope everyone enjoys watching it as much as we did making it.""