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This year's most highly-anticipated event will see Prince Harry and Meghan Markle tie the knot on Saturday.
But ahead of the lavish wedding, Phoebe Waller-Bridge spoke about meeting royal member Camilla Parker Bowles, 70, as she revealed the pair engaged in a surprisingly 'raunchy' conversation about 'girl on girl action'.
Graham - Norton - Show - Air - Friday
Appearing on the Graham Norton show, set to air on Friday - the Star Wars actress, 32, also admitted that the Duchess of Cornwall was not aware who she was, despite their candid discussion.
Detailing their recent meeting, the director explained: 'We had a rather raunchy conversation about the film I am writing.'
Iron - Lady - Star - 'We - Girl
The Iron Lady star confessed: 'We talked about girl on girl action but it turned out she had no idea who I was!'
Camilla's representative declined to comment when contacted by MailOnline.
Camilla - Wife - Charles - Prince - Wales
Camilla - who is the second wife of Charles, Prince of Wales - is set to attend the glitzy royal wedding at Windsor's St George's Chapel, Windsor on Saturday, which is expected to be viewed by millions around the world.
Phoebe was joined by singers Gloria Stefan and Leon Bridges, actor David Tennant and co-star Emilia Clarke as she discussed the upcoming Star Wars film.
Film - Lando - Companion - L3-37 - Man
Speaking on auditioning for the film - in which she plays Lando's droid companion L3-37 - the Man Up actress said: 'I had no idea what a droid was. On the way to the audition I asked the cab driver and he rang his family.'
'Nobody knew so I decided to do it as a human. I was then asked to make it more like a robot!'
Solo - Star - Wars - Story - Ron
Solo: A Star Wars Story is directed by Ron Howard, who took over after original helmers Phil Lord and Christopher Miller departed over 'creative differences'; they will retain an executive producers credit.
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