Weight loss is something that many people aspire to, but as anyone who has ever tried to lose weight will attest, it's no mean feat and requires a lot of hard work and determination.

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However, it's something that Rebel Wilson has achieved with stunning results in 2020, and now she's taken to Instagram once again to show off her incredible 40lb weight loss in a blue dress.

This snap was taken on the 40-year-old's way to a charity event for The School of St Jude, a facility that provides free education for Tanzanian children.

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Needless to say, fans of the actress flooded the comments section of the picture with support.

Amy Shark wrote: "Ur the hottest day of the year."

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Elizabeth Stewart added: "UMM....GORGEOUS!!!"

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A third wrote: "You are looking amazing! Not just the weight loss.... the confidence and the happiness it brings! Truly an inspiration!"

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This comes after Wilson said that she feels the need to "physically transform" so people can imagine her in serious acting roles.

Wilson became a household name after portraying "Fat Amy" in Pitch Perfect, however, as she entered her forties, she decided that it was time to focus on her health.

The Australian actor took to social media in January to reveal that 2020 would be her "Year of Health", and that she would be stepping up her exercise regimen and cutting down on "the sugar and junk food" as part of "some positive changes".

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Wilson has reportedly lost 2st 8lbs (40lbs or 18kg), with an overall goal weight of 11st 8lb (75kg or 165lb).

In a recent interview, Wilson disclosed that the weight loss wasn't just for herself.

Speaking to The Express, Wilson stated she "literally feels as if she has to physically transform" so that people can see her as something other than a comedic actor.

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"For some reason, even though we’re in a very imaginative industry, it’s very difficult for people to imagine me as a serious actress and I feel that I physically have to show you that I am different," she said.

"I am somewhat transforming myself in order to help transform my career. I still love comedy and I will obviously still work in the comedy space, but I did train originally as a dramatic actress… which people forget."

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There's no doubt Rebel looks amazing, but as long as she's happy and healthy, that's the important thing!

Rebel Wilson showcases incredible weight loss in new Instagram snaps