LONDON, ENGLAND - JULY 21: Madonna performing during her Blond Ambition World Tour at Wembley Stadium in London, England on July 21, 1990. This was Madonna's third concert tour and promoted her fourth studio album, Like a Prayer (1989). It was attended by an estimated 800,000 people throughout Japan, North America and Europe. The costumes were designed by Jean Paul Gaultier, and included the iconic cone brassiere corset. (Photo by Duncan Raban/Popperfoto via Getty Images)