The TV star, 62, shared a video to Instagram of herself wearing the skin-tight look, which featured a red jumper and figure-hugging red trousers with black boots.
She revealed that her ribbed, turtleneck knitted top was from Sosandar, where it is currently available in sizes 10 to 20 and it in the sale for £31, discounted from £45.
It is described on the site as "figure-hugging" as well as "timeless" and will "brighten up your mood".
Meanwhile, Vorderman's stretchy trousers – tucked into her knee-high footwear – are from Freddy, where they are priced at £109.
The clip also featured another of her stylish ensembles, in which she wears a brown polka dot top also from Sosandar and brown trousers from Jitrois, which she revealed were 20 years old.
Her post was well-received by social media users who left more than 4,900 'likes', with many leaving comments of praise.
Zoe Ball wrote "what a woman", while Saira Khan told her she looked "amazing".
Another shared: "Carol! You look epic and you're an inspiration to women over 50."
Meanwhile, a fourth noted "the red outfit is quite splendid" and a fifth added "absolutely stunning".
It comes after Vorderman, a mother-of-two, impressed This Morning viewers in a form-fitting ensemble last month.
She shared the look on Instagram, where she wished her followers a "FEEL GOOD FRIDAY".
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