Princess Diana knew Queen Elizabeth long before she became engaged to Prince Charles because she grew up in royal circles. According to The Independent, her father was an attendant of the Queen.
According to Diana's biographer, Andrew Morton, the relationship between them was polite and formal. This is evident in the pre-wedding photo of Diana and the Queen, where they kiss on the cheek.
On July 1, 1981, Lady Diana Spencer kissed Queen Elizabeth II on the cheek before watching Prince Charles play polo.
On July 29, 1981, Diana publicly curtsyed the Queen for the first time at a royal wedding ceremony at Westminster Abbey.
