Renee Zellweger sported a large prosthetic bump as she filmed scenes for upcoming movie Bridget Jones's Baby.

Zellweger wrapped up warm in a blue coat, striped top, blue jeans and black boots on set outside Sainsbury's supermarket in Woolwich, south London.

She reprises the role of Jones in the third instalment of the franchise, 14 years after the first was released.

Colin Firth will also return as Mark Darcy, who Jones became engaged to at the end of the second film, Bridget Jones: The Edge Of Reason.

US actor Patrick Dempsey confirmed his involvement in the film with an Instagram shot in September, and he is rumoured to play a new love interest.

The first official image from the movie was released last week showing the actress smiling and having traded in her diary for a modern iPad.

Author Helen Fielding released her third Bridget Jones novel, Mad About The Boy, in October 2013, although it is not known if the film will follow the same plot.

According to IMDb, it is slated for release in the UK in September next year.