Roll up: Yves Saint Laurent's Le Smoking has become this season's most hard-working trend

The look is a muscularly masculine 1960s alternative to the LBD.

Styling: Gemma Hayward

Photographs: Jeon Seung Hwan

Model: Sarah Birkett at Next

Hair: Tracey Cahoon for Viva Salon London using Shu Uemura

Hair assistant: Lydia

Make-up: Emma Miles using Chanel Les Beiges and S 2013

Photographer's assistant: Jed Skrzypczak

Shot on location at St Pancras Renaissance Hotel. Chambers Suites available from £720. 020 7841 3540, thechamberslondon.com