Pippa Middleton is reportedly engaged to boyfriend Nico Jackson after he popped the question during a holiday to Mustique.
The couple have been on the Caribbean island for two weeks.
A close friend of the couple told the Daily Mail: "We all suspect there's been an engagement but no one's been told yet."
It is the second time Pippa, 29, and Nico, 25, have been to Mustique this year, after a trip to the island with the rest of Middleton clan and Kate and William in February.
The Middletons reportedly bought a dream holiday home in Mustique in 2011.
In the past they've invited a string of friends to holiday with them on the 1,400-acre island, including hedge-fund boss Mark Cecil and his wife Katie, Roger Pritchard, who is head of the Mustique Company, tennis coach Richard Shaffer, equestrian manager Liz Saint and the island doctor, Michael Bunbury.
Kate and William jet off to Mustique for winter holiday
Paul McCartney and Nancy honeymoon at Mick Jagger's Mustique retreat