Kate Middleton and Prince William got married in April 2011

Kate Middleton made sure Prince William had a very special 30th birthday yesterday.

The 30-year-old Duchess spoiled her husband by making him breakfast in bed before he went off to work as a search and rescue pilot in Gloucestershire.

She also bought him a bespoke watch, which she's said to have asked Crown Jewellers G Collins & Sons to design.

William chose to keep his milestone birthday a quiet affair, but Kate is determined to make it one to remember.

With sister Pippa and mum Carole, she's been planning a dinner party for Wills - with a helping hand from his brother Prince Harry - which will take place this weekend.

'She wants to make a roast dinner for 25 of his closest friends,' reveals our source.

'After dinner, she wants to kick off the party with a murder mystery game, which she knows he'll enjoy.

'Although
there'll be a fair few of his friends attending, it'll still be a
romantic evening for them as he'll know that this is her way of showing
him how much she loves him.'

SEE PICTURES Kate Middleton Style File>> 

SEE PICTURES Kate Middleton wears Orla Kiely dress for Royal engagement in London with Prince Charles>>

SEE PICTURES Kate Middleton keeps dress hidden under chic grey coat at first Royal engagement without Prince William>>

Anna Duff