The couple, who announced their engagement in April 2012 after seven years together, have been spending the holiday at the private Parrot Cay estate of American fashion designer, Donna Karan along with their six children, Brad's parents Jane and William Pitt, his brother Doug and sister Julie.
'The Sanctuary', a collection of three secluded villas, three open-air pavilions and four swimming pools, was built by Karan as a "cocoon of serenity" for her family following the death of her husband Stephan Weiss in 2001.
The entire estate, styled in a hybrid Indonesian/African style, sleeps 22, but Parrot Cay is dotted with similarly luxurious private residences, perfect for their entourage ( one local told a journalist that the couple had been spotted with two nannies per child in tow), and wedding guests.
Speculation about the couple's wedding plans has been rife ever since news of their engagement broke; with recent reports pointing to Greece as the likely location.
However is seems that the planet's most high-profile couple - both bankable A-list actors and stars of major luxury label campaigns (Brad is the current face of Chanel No.5, while Angelina appears in Louis Vuitton's 'Core Values' ads) - might have given the world's press the slip and tied the knot while the paparazzi were busy tucking into turkey.
Both party's management teams are unavailable to comment at this time.
Belinda White Telegraph.co.uk