Taking to Twitter, the Great British Bake Off star joked that Prince Harry was most likely “meditating under a tree” to mark the celebratory occasion.
His remark comes after the comedian complained the bells at Windsor had been ringing for quite some time to mark the occasion.
Taking to the micro-blogging site, Matt couldn’t resist a cheeky dig at the royal, who resides in the United States with his wife Meghan Markle.
In view of his 1.2 million followers, he penned: “The bells at Windsor have been ringing for about half an hour, presumably because it’s Prince Harry’s birthday.
“Well he’s in America probably meditating under a tree or something so hopefully someone will get the message and stop soon because I can’t hear the telly.”
Fans soon flocked to comment on the post, as Georgia typed: “Maybe it’s a ring for every year of his life. Half an hour? Blimey, how old is he?”
Terri noted: “I just left Royal Holloway having dropped my son at university. Did wonder what the bells were! Thanks for the info.”(sic)
“Or maybe they’re just REALLY excited that Bake Off is back in under a week?” Mighty Pea quipped.
“Happy birthday Prince Harry!” they penned on the micro-blogging site.
Prince Charles and his wife, the Duchess of Cornwall, also honoured his youngest son in a heartfelt birthday message.
They wrote: “Wishing The Duke of Sussex a very Happy Birthday today!”
Harry now lives in Montecito with his partner Meghan and the couple’s two children, Archie and Lilibet.