LONDON, UNITED KINGDOM - MARCH 8: Under the eye of a security guard, 08 March in London, Barbie, the world's most celebrated doll, marks her 40th birthday with a unique diamond-encrusted dress. The 50,000 pound (80,000-dollar, 70,000-euro) gown with its 160 diamonds was created by Barbie's manufacturer Mattel together with diamond mining giant De Beers. It was launched and put on exhibit at one of London's most famous jewellers. (Photo credit should read JOHNNY EGGITT/AFP via Getty Images)
