DUBAI, UNITED ARAB EMIRATES - MARCH 16:  The Prince And Princess Of Wales On A Walkabout In Dubai On The Gulf Tour. Diana's Outfit Is By Fashion Designer Catherine Walker And Hat By Milliner Philip Somerville.  (Photo by Tim Graham Photo Library via Getty Images)
Princes Charles and Princess Diana, wearing an outfit designed by Catherine Walker that became a fashion sensation, in Dubai in 1989. Getty Images

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