Happy birthday,Kate Middleton!

The Duchess of Cambridgeturned 39on Saturday and royal family members marked the occasion with sweet posts on social media, though she and her husbandPrince Williamacknowledged the difficulty of celebrating while thecoronavirus pandemiccontinues to ravage the U.K. and much of the rest of the world.

The couple thanked friends and family for the birthday wishes in his own post, which included a photo of Kate waving while wearing a face mask.

“Thank you for your kind wishes on The Duchess’ birthday,” theywrotefrom the Kensington Royal account. “Birthdays have been very different in recent months, and our thoughts continue to be with all those working on the front line at this hugely challenging time.”

“Happy Birthday to The Duchess of Cambridge!”readone post from Clarence House, the office ofPrince CharlesandCamilla, Duchess of Cornwall.

The official royal family Instagram account, which representsQueen ElizabethandPrince Philip, shared a photo of Kate, as well as one of her standing with the Queen at a flower show last year.

“Wishing The Duchess of Cambridge a very happy birthday today! 🎂,” thecaptionalongside the photos said.

Kate, who sharesPrince George, 7,Princess Charlotte, 5, andPrince Louis, 2, with William,spent her birthday at homewith just her family of five.

The royal family is currently isolating at their country home,Anmer Hall, in Norfolk as the U.K. is under itsthird major lockdownamid the ongoing pandemic.

Though she won’t get to have a large birthday celebration, a source close to the royal household recently told PEOPLE thatthe quiet country life suits Kate.

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“Even if she were married to a banker, I don’t think she would be much different,” the source said last month. “She would have wanted to be a country mom and be in town occasionally. I don’t think she would have been living a very different life.”

“At the end of the day, she’s in training to be a future Queen, but honestly you would never know it,” added a source close to Kate. “If you go round to her house, you get a cup of tea, and it’s often William who makes it! It’s a lovely, welcoming house, not a fancy, stuffy palace in any way.”

source: people.com