Prince William is celebrating like it's his birthday, every day.

The Prince of Wales marked his 42nd birthday with a very special outing as he took his children Prince George, 10, Princess Charlotte, 9, and Prince Louis, 6, to see Taylor Swift perform at London's Wembley Stadium June 21, royal reporter Roya Nikkhah confirmed on X.

William's wife Kate Middleton did not appear to be at the show alongside her family, although she did have a sweet birthday message for her husband of 13 years earlier in the day.

"Happy birthday Papa," she posted on Instagram, alongside a photo of William and his children jumping on the beach, "we all love you so much! Cx."

And while Kate has largely stayed out of the public eye since sharing her cancer diagnosis in March, the 42-year-old did join the royal family for her first public appearance at the Trooping of the Colours ceremony on June 15. The Princess of Wales—donning a black-and-white Jenny Packham dress and Philip Treacy hat—appeared with her family on the Buckingham Palace balcony as they watched the Royal Air Force fly past.

As for William, this is far from the first time he and Taylor have crossed paths. In fact, Miss Americana and the real-life prince previously took the stage together alongside Jon Bon Jovi for a performance of "Livin' on a Prayer" at a charity event in 2013. And as Taylor explained the following year, it was truly a wild moment.

"Yeah, it was insane," she said, "and I was very nervous for the whole thing because it was at Kensington Palace and it was my first royal encounter of sorts."

According to the 34-year-old, before Jon started to sing, he pointed to William, "and said something like, 'I hear you like to do this at karaoke night, karaoke boy.'"

"He starts the song and Prince William looks over at me and says, 'I don't remember it now. It's all gone now. I don't remember the song now.' Kinda freaking out a little bit," she continued. "He just looks at me and is like, 'You gotta go with me' and I was like, 'OK,' and we got up there and started singing 'Livin' on a Prayer.' Like, I died."

Unfortunately William did not appear to take the stage at Wembley Stadium during the Eras Tour, but the royals were in good company, as Taylor's boyfriend Travis Kelce was also spotted in the audience, alongside his brother Jason Kelce and his wife Kylie Kelce.

For more royal updates, keep reading.

Nearly three months after sharing her cancer diagnosis, the Princess of Wales said that she's "making good progress" with chemotherapy, though there are "good days and bad days" amid her health journey.

"On those bad days you feel weak, tired and you have to give in to your body resting," Kate wrote on Instagram June 14. "But on the good days, when you feel stronger, you want to make the most of feeling well."

She added, "My treatment is ongoing and will be for a few more months. On the days I feel well enough, it is a joy to engage with school life, spend personal time on the things that give me energy and positivity, as well as starting to do a little work from home."

On May 13, King Charles III bestowed the title of Colonel-in-Chief of the Army Air Corps to his oldest son, sparking controversy as many royal watchers believed the title would be more suited for Prince Harry, who trained and served in the military branch.

On April 26, nearly three months after sharing his cancer diagnosis, Buckingham Palace announced that Charles will return to public-facing duties. 

The queen consort attended the Royal Maundy Service on March 28 in place of King Charles III, making her the first spouse of the Monarch to continue the ancient tradition.

In a March 22 video message, the Princess of Wales shared that she'd been diagnosed with cancer after undergoing abdominal surgery in January.

"It was thought that my condition was non-cancerous. The surgery was successful," she said before noting that tests after the operation found cancer had been present. "My medical team therefore advised that I should undergo a course of preventative chemotherapy and I am now in the early stages of that treatment."

After photo agencies pulled the picture Kensington Palace shared of Kate since having her abdominal surgery on March 10, the Princess of Wales addressed claims the photo was doctored. 

"Like many amateur photographers, I do occasionally experiment with editing," she tweeted on March 11. "I wanted to express my apologies for any confusion the family photograph we shared yesterday caused. I hope everyone celebrating had a very happy Mother's Day. C."

Princess Diana's niece celebrated Mother's Day in the U.K. by sharing she and her husband Michael Lewis privately welcomed their first baby.

“It’s the joy of my life to be your mummy, little one. I love you unconditionally," she captioned her March 10 Instagram post. "Happy Mother’s Day to those who celebrate today."

After keeping up her full slate of engagements in the wake of her husband's cancer diagnosis, the palace cleared Camilla's schedule.

The Times pointed out March 2 that the 76-year-old didn't have any engagements on her calendar until March 11, when she'd be due at Westminster Abbey to observe Commonwealth Day.

The husband of Lady Gabriella Windsor and ex-boyfriend of Pippa Middleton, was found dead Feb. 25. Days later, a coroner's inquest found that he died by suicide.

While King Charles III was in the hospital for his benign prostate enlargement procedure, the royal family member was diagnosed with cancer.

"His Majesty has today commenced a schedule of regular treatments, during which time he has been advised by doctors to postpone public-facing duties," Buckingham Palace said Feb. 5. "Throughout this period, His Majesty will continue to undertake State business and official paperwork as usual.The King is grateful to his medical team for their swift intervention, which was made possible thanks to his recent hospital procedure. He remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible."

The Duchess of York's rep said in a statement on Jan. 21 that Sarah was recently diagnosed with malignant melanoma, an aggressive form of skin cancer. Several months prior, she underwent a single mastectomy to treat breast cancer.

On Jan. 14, Queen Margrethe II of Denmark made history as she officially abdicated the throne, handing the crown over to her son, now known as King Frederik the 10th. 

Kensington Palace announced on Jan. 17 that Kate Middleton underwent planned abdominal surgery and was set to remain in the hospital for 10 to 14 days.

"Based on the current medical advice," the Palace said, "she is unlikely to return to public duties until after Easter."

Amid Kate's recovery, Prince William postponed a number of engagements as he supported his family, including the couple's three children, Prince George, Princess Charlotte and Prince Louis.

Shortly after Kate's hospitalization was made public, Buckingham Palace shared that Charles "has sought treatment for an enlarged prostate."

"His Majesty's condition is benign and he will attend hospital next week for a corrective procedure," the statement added. "The King’s public engagements will be postponed for a short period of recuperation."

Princess Claire and Prince Felix of Luxembourg welcomed son Balthazar Felix Karl on Jan. 7, the first royal baby of the New Year!