The One Beauty Rule That Kate Middleton Must Adhere To, Apparently

This is why you'll never see the Duchess of Cambridge with brightly painted nails... Kate Middleton has, undoubtedly, become one of the most influential women in the UK when it comes to fashion and beauty.
The Duchess is spotted in something. It’s an instant sell-out.
She changes her hair. We’re taking that photo to the hairdressers.
See: Where To Buy Kate Middleton’s Favourite Wellington Boots
But it seems as though there’s one beauty treatment that you won’t be se