Suggesting the closeness in their friendship, Eugenie is also said to view Robbie as “the brother she never had”.
Their friendship is said to have begin in 2011 after Eugenie’s mother, Sarah Ferguson, is said to have formed a friendship with Ayda after a shopping day in St Barts.
The royal couple were later invited to Robbie and Ayda’s home in Wiltshire to watch Eurovision in May 2011.
As well as their Kensington Palace home, Ivy Cottage, Eugenie and Jack own a luxurious villa at the exclusive CostaTerra Golf and Ocean Club in Comporta, located on the Alentejan coastal strip.
Eugenie has previously spoke openly about the couple’s Portugal home, including revealing to HELLO! that their sons, August, 4, and Ernest, 2, “love swimming”.
She told the publication: “The sea in Portugal’s a little bit rougher. So we’ve got our feet in, but Augie is a fish.
“He literally loves it and we have whales and dolphins all across the walls.”