Jennifer HudsonJennifer HudsonShe was known as the American Idol singer who had the body to match her breathtaking no-limits voice.

Then she wowed as the buxom ballsy Effie alongside a slim Beyonce in Dreamgirls.

But after giving birth last year, Jennifer Hudson slimmed down - and six months later she's keeping the weight off.

Having revealed her new slender figure at Cannes Film Festival in May, along with the news that she'd become the face of weight-loss system Weight Watchers, we couldn't help but wonder if Jennifer would be able to maintain her new physique.

But we needn't have worried.

In new pictures from a charity ball held at the end of last week, Jennifer looks amazing. According to her trainer Harley Pasternak: "(Jennifer's) middle, thighs and butt are more toned than ever. She's excited about her new body."

The new mum revealed motherhood as the inspiration behind the weight loss: "I wanted to find a better lifestyle and set a good example for my son," so we're guessing she will be slim forever more.

See more of Jennifer's body over time below.

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