see more

SANDHURST, UNITED KINGDOM - APRIL 10: Princess Diana (1961 - 1997) attends a passing out parade at Sandhurst, on April 10, 1987, she is wearing a military style suit by Catherine Walker and hat by Graham Smith at Kangol. (Photo by Georges De Keerle/Getty Images)

SANDHURST, UNITED KINGDOM - APRIL 10:  Princess Diana (1961 - 1997) attends a passing out parade at Sandhurst, on April 10, 1987, she is wearing a military style suit by Catherine Walker and hat by Graham Smith at Kangol.  (Photo by Georges De Keerle/Getty Images)