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Prince Harry's 30th Birthday Party Cancelled Because Of Kate

09/15/2014 11:28 EDT | Updated 09/15/2014 11:59 EDT
Max Mumby/Indigo via Getty Images
LONDON, UNITED KINGDOM - AUGUST 05: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince Harry, Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge visit the poppy field art installation entitled 'Blood Swept Lands and Seas of Red' by artist Paul Cummins, in the moat of the Tower of London, to commemorate the First World War on August 5, 2014 in London, England. By it's completion on Armistice Day 2014 the moat will contain 888,246 ceramic poppies, one for each British and Colonial fatality during World War One. (Photo by Max Mumby/Indigo/Getty Images)

It looks like turning 30 really has made Prince Harry a grown-up.

The royal, who turned 30 on Monday, decided to cancel the birthday bash that had been planned in his honour because of his sister-in-law Catherine (née Kate Middleton) continuing illness with extreme morning sickness, reports Hello! Canada.

The party, which was to consist of just close family and friends, was rumoured to be organized by Kate, as well as her sister Pippa's party planning company, according to the Independent. An insider tells the publication Harry felt it was wrong to throw the party while the Duchess of Cambridge wasn't feeling well.

Prince Harry did celebrate the end of his successful Invictus Games, saying he would share a beer with David Henson, the captain of the British team, who happens to also turn 30 on Sept. 15, writes the Telegraph.

Meanwhile, a decision has yet to be made regarding the Duchess of Cambridge's upcoming trip to Malta, but that should be decided by mid-week, Hello! notes.

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