The Weight Watchers spokesperson reveals the inspiration behind her new size-6 figure

By Michelle Tan
Updated May 20, 2010 05:30 PM

Once a size 16, Jennifer Hudson is now reveling in her new size 6 body, telling PEOPLE, “I m in the best shape of my life!”

After giving birth to her son last August, Hudson, 28, had to drop her post-pregnancy pounds for her next movie role as Winnie Mandela. “Whatever it takes to morph into a character I ll do it,” says Hudson.

But the star went about her weight loss in a healthy way by working out with trainer Harley Pasternak and learning about portion control through Weight Watchers point system (Hudson became the official spokesperson for the weight loss plan earlier this year).

PHOTOS: Stars’ Workout Shout-Outs
Now as the actress (official Web site) gets ready to fly to the South African set of her new movie, Hudson will face the challenges of figuring out how many points are in vetkoek – a South African fried treat. Just don t think she s going to fall off the weight-loss wagon anytime soon.

“She will need to investigate every new product on this new continent,” says Liz Josefsberg, Hudson s Weight Watchers counselor. “I am not the least bit worried about Jennifer She is an amazing and resilient personality who will be just fine in her surroundings.”

To read more about Hudson, the details of her weight loss plan, and to see the evolution of her body through the years, pick up the new issue of PEOPLE, on newsstands Friday