Stylish Samantha Cameron makes a designer decision for David's big moment

Last year Samantha Cameron made headlines when she chose a £65 Marks & Spencer dress for her husband's party conference.

Fast forward 12 months and the mum-of-three is now the Prime Minister's wife – and she has the wardrobe to match.

Samantha dressed to impress at David's first party conference as PM this week. She chose a £750 black silk designer dress from Paul Smith's autumn 2010 range.

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Showing off an incredible post-baby figure less than two months after giving birth, the 39-year-old threatened to steal the show in the frock, which featured a pretty pink water rose print.

And just like Justine Thornton – Labour leader Ed Miliband's long-term partner – Samantha chose a pair of black heels from LK Bennett to complete the outfit.

Her look was evidently a big hit with her husband.

Having been joined by Samantha on stage after delivering his keynote speech, David was seen whispering affectionately in his wife's ear and placing his arm around her waist as they greeted the crowd.

He then escorted her out of the hall to a standing ovation.

Absent from the conference was the couple's baby, Florence, safely tucked up in their hotel after being reunited with her delighted dad on Wednesday.

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