Massenet's must-haves

The founder of online boutique Net-a-porter.com has a classic 'uniform' which she updates each season with a few key items and some funky shoes.

1. A straw hat for summer

'Essential and stylish, I live in them when I am in the South of France.'

2. Big sunglasses

'I never leave home without them. They should never be worn indoors, though, as you should always let people see your eyes.'

3. A man's watch