Britain's Princess Beatrice is having a sporty birthday bash.
The royal is planning to celebrate her 25th birthday this Thursday (08.08.13) with an outdoor sports contest followed by a gourmet dinner.
A source told the MailOnline: "Guests have been told to bring trainers as the agenda for the evening involves outdoor games, followed by a big dinner."
After the guests have indulged in some fun and games, Beatrice will reward them with a meal at Royal Lodge in Windsor Great Park.
The sports fan - who competed in the 2010 London Marathon - has invited a host of A-list guests including her cousin Prince Harry, Duchess Catherine's younger sister Pippa Middleton, actor Ashton Kutcher and pop star Robbie Williams.
Beatrice's guest list will completed by her long-term boyfriend Dave Clark who she has been dating for six years. The pair recently enjoyed a double date with Ashton and his girlfriend Mila Kunis at London's Duck and Waffle restaurant, so the Hollywood beauty is also likely to receive an invite.
The Duke and Duchess of Cambridge will be noticeably absent from the celebrations since William will be stationed in Anglesey, North Wales, working as a search and rescue pilot, and Catherine is expected to remain with her two-week-old son, Prince George, in Berkshire.
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