Are there really 'rules' to what to wear?

The world of high fashion always claims to be about breaking rules. Take a look at the catwalks at London Fashion Week, which starts today

10 FASHION LAWS
1. Don't do denim with denim
2. Men shouldn't wear white socks
3. Legs or cleavage - never both
4. Vertical stripes are slimming
5. The tip of a tie should always cover the last button of a shirt but never go below your belt
6. Never mix patterns
7. Straight men should only pierce their left ear
8. Shoes and bags/shoes and belts should always match
9. Blue and green should never be seen
10. Never mix gold and silver jewellery