Harry said the pair would be as ‘thick as thieves’ during his first official interview with Miss Markle, after their engagement announcement today.
The Prince also revealed how his Suits star girlfriend said ‘yes’ immediately when he got down on one knee.
The couple were roasting chicken on a ‘cosy night’ in, at Nottingham Cottage, Kensington Palace, a few weeks ago when he popped the question.
When asked by BBC host Mishal Husain, if Princess Diana would have got on well with her new daughter in law, Harry, 33, did not hesitate.
He said: ‘Oh they’d be thick as thieves, without question, I think she would be over the moon, jumping up and down, you know so excited for me, but then, as I said, would have probably been best friends – best friends with Meghan.