Rule 17: Understand the power of accessories.

It's the quickest (and cheapest) way to update an outfit. "Pick one key accessory to add to your wardrobe. Your look will be individual and recession-proof," says jewellery designer Sophie Kyron.

 

 

 

Rule 18: Don't be afraid to ask.

If you're admiring the skirt on the girl in front of you, ask her where she got it. She'll be flattered, and if she doesn't want to share, she'll just say it's vintage.