the Duchess of Cambridge wore a blue Gabriela Hearst shirt-waister to meet David Attenborough – a hero of Hearst's, who had sleepless nights when she realised that the two percent stretch that makes so many clothes comfortable, is a plastic derivative.
Nowadays the stretch in her clothes comes via silk. For more news, analysis and advice from The Telegraph's fashion desk, click here to sign up to get our weekly newsletter, straight to your inbox every Friday.
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