Diana wore the pale blue Catherine Walker suit dress, paired with a John Boyd hat, as she visited Canberra with Prince Charles on their royal tour of Australia and New Zealand nearly 40 years ago. 

A few weeks prior, for Prince Philip’s memorial service, Kate opted for a polka dot dress. 

Many suggested Kate made a “sweet nod” to Princess Diana with her outfit. 

The black and white spotty dress was by designer Alessandra Rich.