Amanda Holden nearly risked a wardrobe malfunction as she slipped into an eye-popping minidress for her Heart radio show.

The Britain's Got Talent star looked stunning – and far younger than her 51 years – as she posed in the blue and yellow number.

The long-sleeved and high-necked dress was super tight and clung to Amanda like a second skin.

READ MORE: Amanda Holden sends fans wild as she works out in skintight skirt and stilettos

Extremely short, it flaunted her endless legs as she perched on the edge of her desk and struck a sexy pose.

Amanda wore her caramel-coloured hair loose to her shoulders and her skin glowed with natural-looking make-up and a slick of nude lipstick.

She had teamed her teeny dress with towering black stilettoes – but joked that she would "swapping these babies for my hiking boots" as she is set to take on the Three Peaks Challenge for charity.

The star's fans went wild for her latest Instagram upload, with one calling Amanda "the most beautiful woman in the world".

"Wow, those legs…" posted one.

Another asked: "How do you always look so amazing?"

"Wow Amanda you look absolutely stunning," said someone else, adding: "You would look gorgeous wearing anything even a bin bag!"

Another fan declared the star was "hot and beautiful".

"What a work of art you are!!!" said one of her followers.

Plenty of people also wished Amanda lots of luck for Three Peaks, with one quipping: "Take care of those gorgeous legs!"

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The gruelling challenge will see the TV beauty scaling the highest mountains of Wales, England and Scotland – Snowdon, Scafell Pike and Ben Nevis.

She will climb an incredible 10,476 feet in just 24 hours in a bid to raise funds for Make Some Noise, which is Heart's official charity.

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