Her younger sister Pippa is said to have organised Kate's hen party, which took place at a friend's house in late March.
'She has already had her hen night, but it was certainly low-key. It was done privately,' a close friend told the Daily Telegraph. 'Not all of Kate's friends were there and she will be catching up with other friends over the coming weeks,' they revealed.
Kate's celebrations probably wouldn't have included heavy drinking for the bride-to-be as she's said to usually avoid alcohol.
Prince William's stag do took place a few days before Kate's hen party and was organised by his friend and nightclub owner Guy Pelly for about 20 people at another friend's country estate in Norfolk.
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