She was the poster girl for a generation of aging spinsters and unmarried soon-to-be cougars who are finding reasons why being single in their 30s is a cool idea. Now Bridget Jones is back with a vengeance, with a slimmer frame, a baby and a new lover to boot.

Renee Zellweger, who played the chubby and lovable bachelorette in the original 2001 film and the 2004 sequel Bridget Jones Diary: The Edge of Reason was recently spotted starting filming in London in the reprisal of the iconic modern woman role, reported the Daily Mail.

There are a number of significant changes for Bridget Jones Diary that will surprise audiences around the world. The first is that she doesn't have those pink puffy cheeks anymore and has finally seemed to shed the baby fat that has stubbornly clung to her frame well into her 30s. At 46, Zellwegger is portraying a woman, who is not only more slender but also more sophisticated and mature in how she dresses and is an expectant mother in this third installment of the film franchise.

To prove how chic she has become, recent snapshots of the actress during the production  of Bridget Jones Diary, show her traipsing around the busy London streets in vintage shoes and floaty dresses in elegant blue and serene greens. She also doesn't need to struggle with a hair iron anymore, with the more mature Bridget sporting straight locks with lazy curls at the ends.

As for her love life, it was reported that her long-term love interest  Mark Darcy, played by Colin Firth, is making a comeback, but, Daniel Cleaver, played by Hugh Grant, is not. What is more intriguing is the addition of Patrick Dempsey as the new love interest of the famous blond.

Zellwegger's reprisal of the more mature heroine is sending slivers of relief down the actress's spine. She had once tried to gulp down a 4,000 calorie-a-day diet to add an additional 20 pounds to her body in a very short period of time - an experiment that scared her after watching the documentary Super Sized Me.

Meanwhile, ET Online reports that Hugh Grant made remarks about the sequel, aptly titled Bridget Jones's Baby, saying that though he decided not to do it, he believed that the film production would move ahead without him. He declares the book to be "excellent," though the "script is completely different -- well, the script as I last saw it a few years ago."