London, Sep 22 - Hollywood actress Renee Zellweger won't be piling on the pounds to reprise her role as overweight Bridget Jones in the movies' sequel. The actress is, in fact, planning to don a fat suit.

The petite star has signed on for a third film about the hapless diary-keeper after the first two movies grossed more than $544 million worldwide. But instead of embarking on a high-fat diet as she did for the 2001 and 2004 pictures, Zellweger will turn to the wardrobe department to make her appear larger, reports contactmusic.com.

'Renee will be wearing a fat suit in the third film as it took her a while to lose the weight last time. She's also thinking about the effect quickly putting on and then losing 30 pounds (13.6 kilograms) has on her body,' said a source.

Colin Firth and Hugh Grant are also expected to return to the movie franchise.

The upcoming film is rumoured to chart Jones' quest to have a baby in her 40s.