With the excitement of the Queen's Diamond Jubilee over, it's thought Kate's attentions have turned to another special celebration on the horizon: Prince William's big 3-0.
And after spending so much time away from her husband this year, after he took an RAF tour to the Falklands, it's thought the Duchess of Cambridge is planning to 'pull out all the stops' by arranging a surprise party to remember.
It's not known whetherKateplans to hold the birthday bash in London, or at the couple's hideaway Anglesey home.
But we're sure Prince William will have an amazing surprise in store, come June 21.
'Kate really wants to make Wills' birthday one to remember,' one insider told Now, adding that she's 'pulling out all the stops,' to make it special.
What do you think Kate Middleton has in store for Prince William's 30th birthday? Let us know in the comments box below…