Peter Phillips will marry his Canadian fiancé at Windsor Castle.

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The 30-year-old royal – the son of Princess Anne and her ex-husband Mark Phillips – and Autumn Kelly, 29, will hold a “big-do” at the royal venue’s St. George’s Chapel, contrary to reports the ceremony would take place in a small Scottish church.

A friend of the couple told the Daily Telegraph: “They’re actually getting married in St George’s Chapel in Windsor Castle. It can seat up to 800 people, so it’ll be quite a big do. Autumn’s certainly not thinking low key when it comes to the dress, either. She’s having it made by the Fulham-based designer Sassi Holford, who is creating something completely original which will be called The Autumn.”

Last month, it was reported the pair would tie the knot at Crathie Kirk church near the royal family’s Balmoral castle, where Princess Anne married her second husband Timothy Laurence 16 years ago.

St. George’s Chapel has also been the venue for many royal weddings, including Prince Edward’s marriage to Sophie Rhys-Jones in 1999.

Peter and Autumn – who met at Canada’s Montreal Grand Prix four years ago –
are yet to set a date for the big day. However, it has been rumoured Peter’s sister Zara will be a bridesmaid, while his cousin Prince William, who Peter is very close to, may be best man.