Marc Jacobs paired floor-length evening skirts with chunky knits, in a return to his grungey roots. For a more wearable option, try a slimmer-fitting sweater or ladylike blouse and add sparkle with a statement necklace.
Longline skirt, £129, Sweater, £69, both 8-18, and necklace, £55 www.hobbs.co.uk
