Celebrities may rave about their own products, but what about the beauty goods that don't have their signatures splashed across the packaging? What are the world's most photographed women buying for themselves?

"Shoppers are very celeb savvy," says Simon Comins, head of cosmetics at Superdrug. "We know that if Victoria Beckham is spotted wearing a distinctive colour nail varnish then our customers will be looking out for it in our stores that same day."

Catherine Bossom, buyer for perfumery & cosmetics at Harrods, also believes celebs hold enormous beauty appeal for consumers.

"Even premium brands such as Dior and Chanel are working with the likes of Charlize Theron, Nicole Kidman and Keira Knightley to raise their profile," she explains. "Of course, if a celebrity endorses a product without being paid to, that is even more valuable."

You don't need a VIP pass to take a peep into the stars' make-up bags as we reveal the beauty products the world's beautiful people are using