Jan 27, 2010, 14:40 GMT
Britain's Princess Beatrice and Princess Eugenie are organising their father's 50th birthday party.
Prince Andrew - who turns 50 on February 19 - had a huge party for his 40th birthday which was organised by ex-wife Sarah Ferguson who also invited three of his ex-girlfriends to join the celebrations, but this year it's the turn of his children to make his day extra-special.
A Buckingham Palace insider said: "Although it is quite a landmark, he doesn't really want to make a big fuss of it - but I hear his family have other thoughts."
This time around the invite-list is also thought to include just one ex - actress Angie Everhart.
Angie went to Beatrice's lavish 18th birthday party with Andrew, and has also met his ex-wife, with whom she appears to get along well.
Whether other members of the Royal Family will attend is unclear.
Queen Elizabeth, Prince Philip, Prince Charles and Prince Edward were all absent from his 40th bash.
The queen is expected to host a more formal celebration to mark her son's landmark day later this summer.
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