Mariah Carey has shed an incredible 70lbs since welcoming twins six months ago. 

And the superstar mum proudly shows off her fabulous new figure in an advertisement for the Jenny Plan, the program she used to help her shed her post pregnancy weight

The results of all her hard work can clearly be seen as the superstar gyrates her way through the ad dressed in a bandeau top and long skirt slashed at the side.

And it was a similar story when the 42-year-old stepped out in a figure-hugging long red dress at an event to officially launch her as the new Jenny ambassador.

Mariah gave fans the first glimpse of her post-pregnancy figure this week when she went on Rosie O'Donnell's chat show.

The star, who welcomed babies Morrocan and Monroe on her April 30 third wedding anniversary with Nick Cannon, says she was fearful life would never be the same again after becoming so much heavier.

"I gained an enormous amount of weight. I was scared I was never going to walk again," she said.

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