Clinton in for Google wedding.

FORMER US president Bill Clinton and wife Hillary are expected to be guests at billionaire Google co-founder Larry Page's wedding today.

Page and his girlfriend, Lucy Southworth, are to marry in a private ceremony on Necker Island.

Necker, part of the British Virgin Islands in the Caribbean, is owned by airline boss Richard Branson, who will be the best man.

Details of the event have been kept private.

But it is understood celebrities, including U2 frontman Bono, as well as high-profile politicians, will be flown on private jets from around the world to attend.

Page, who is 34 and worth an estimated pounds 9billion, founded the world's most popular search engine with his classmate, Sergey Brin, in 1998.

Page's fiancee, 27, is a PhD student in "biomedical informatics" at Stanford University, and also has a masters degree in science from Oxford University.

Page's party has booked out the entire island, which has space for 28guests.

Other guests will be ferried in from nearby Gorda Island, a 10- minute boat ride away, where hotels have also completely booked up months in advance.

According to its website, Necker Island is in a "stunning and unspoilt area of the Caribbean" which is surrounded by turquoise waters, coral reefs and pristine sandy beaches.

Guests can only arrive by helicopter or boat, and can choose from a number of secluded Balinese-style beach houses, which are adorned with luxurious pools and Jaccuzzis and sport their own private chefs.

Branson has owned the island since the 1970s.

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BIG DAY: Larry Page