October 1, 1985
Princess Diana danced with Prince Charles in Melbourne, during their official tour of Australia. Here, Diana went for a more unconventional tiara look: she took a diamond and emerald choker necklace, which had been a wedding gift from the Queen, and turned it into a headpiece. She paired the tiara-of-sorts with a one-shouldered turquoise gown, designed by the Emmanuels.
