Richard Branson's son Sam is to marry Isabella Anstruther-Gough-Calthorpe at Ulusaba Private Game Reserve in South Africa today.
The Daily Mail reports that the couple are set to tie the knot beneath a sacred tree on the summit of a hill overlooking the South African veldt with 300 of their closest friends attending the ceremony.
Glamorous Isabella is said to have turned down Prince William and with her royal connections there could be some of Kate Middleton and Prince William's friends at the wedding.
Heir to the £3.4 billion fortune of Sir Richard, Sam and his fiancée Isabella have already spent a week at the venue on the edge of the Kruger National Park in South Africa.
The reserve is home to a number of luxury lodges located beneath a canopy of ancient trees and to add to the sense of adventure, guests have to cross rope bridges between the treehouse-style lodges where local wildlife passes by.
There is a Treehouse Suite overlooking the Xikwenga Dam and also Safari, Elephant and River Rooms, some with their own private plunge pools.
Sam and Isabella are staying in one of the Elephant Rooms and will spend their honeymoon in the Treehouse Suite.
According to the Daily Mail, the couple have taken romantic game drives alone and were excited at seeing a lioness and her new cubs, as well as a leopard and her young.
One member of the wedding party said: 'They look unbelievably happy and very excited.'
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