Remember when Princess Diana danced with John Travolta at the White House?

It was November 1985, and the unlikely partners were guests of President Ronald Reagan and first lady Nancy Reagan. Diana wore a midnight blue velvet gown with a sapphire and pearl choker, an outfit that has since become emblematic of the princess.

source https://www.cnn.com/style/article/princess-diana-white-house-remember-when/index.html