(LONDON) -- How does a princess celebrate the start of her third decade? Monday is the day the world will find out as Kate Middleton, the newlywed bride of Prince William, turns the big 3-0.
The Duchess of Cambridge spent her birthday eve in the public eye, attending the London premiere of the Steven Spielberg film War Horse, in Leicester Square, followed by a charity dinner.
Exactly how the royal couple will celebrate Kate’s actual birthday Monday remains to be seen, and speculation around the milestone has become a parlor game in England, and even here in the U.S.
The UK’s Daily Mail got royal watchers buzzing with a Jan. 5 article speculating that Kate’s younger sister, Pippa Middleton, and royal brother-in-law, Prince Harry, were planning a blowout, ’80s themed party at a “secret pop-up venue” in London.
The article said the party would feature cocktails and karaoke, and that guests, said to be close family and friends, had already received their invitations for the “secretly arranged party.”
The Daily Mail’s report came from Grazia, a British fashion magazine, which cited a “royal source” in saying the party had been “months in the planning,” and that Pippa and Harry have “been in the thick” of the planning.
But, the story was not true, said the palace, which issued a brief statement on the couple’s plans, or lack thereof, to celebrate Kate’s special day.
“Whatever is planned will be low-key and private,” said a spokesman for St. James’s Palace.
Copyright 2012 ABC News Radio