During the prime minister's visit to the US, the first ladies were conspicuous in their support for younger fashion designers

Samantha Cameron's fashion choices were a surprise hit with Americans during her visit to Washington last week, even if one critic did compare her blue dress to a tablecloth.

Both Cameron and Michelle Obama were praised for their ostentatious support for young designers, and the boost that their stylish appearances are giving to the fashion industry. "We got so used to 'first ladies' wearing drab suits in primary colours and it's so exciting to see Samantha, as well as Michelle, wearing outfits that aren't just polished but really flattering," said Amy Larocca, fashion director for New York magazine.