AceShowbiz - Princess Charlotte had the time of her life at Taylor Swift's recent "Eras Tour" concert in London, celebrating her dad Prince William's 42nd birthday with her older brother, Prince George. Charlotte, the royal family's biggest Swiftie, had been looking forward to this special occasion for months, especially amid her mother's battle with cancer.

"Princess Charlotte is the huge Taylor Swift fan in the family," a source told Entertainment Tonight. The young princess had been eagerly awaiting the concert, and with her mom Kate Middleton undergoing preventative chemotherapy, the night out became a poignant moment for the family.

"She has wanted to go to the concert for months, but with her mum being treated for cancer, this was a really special day to be able to celebrate her Papa's birthday like this,"

Prince William took Charlotte and George to Swift's first "Eras Tour" show in London, and the children were overjoyed. "Charlotte absolutely loved [the concert]," shared the source. "They are really wonderful children. William and Kate have done a fantastic job raising all three of them." Kate Middleton, who announced her cancer diagnosis in March, stayed home with their youngest child, Prince Louis, 6, as she continues her treatment.

The concert even featured a private backstage meet-and-greet with Taylor Swift and her boyfriend, NFL star Travis Kelce. "Happy Bday M8! London shows are off to a splendid start," Swift posted on social media, along with a group selfie. The official Kensington Palace accounts echoed this sentiment, expressing gratitude for the unforgettable evening.

Prince William, who was seen enthusiastically dancing to Swift's hit "Shake It Off", didn't mind going viral. "He really just wanted it to be a special night for Prince George and Princess Charlotte," an insider close to William revealed. Fans compared his dance moves to those of Chandler Bing from "Friends", while others noted the stark contrast to Charlotte's more composed enjoyment.

Despite the joyful celebration, the family remains focused on Kate's health journey. Kate shared her progress openly, stating, "I am learning how to be patient, especially with uncertainty. Taking each day as it comes, listening to my body and allowing myself to take this much-needed time to heal." She has been making public appearances cautiously, including the recent Trooping the Colour.

Princess Charlotte's unforgettable night at Taylor Swift's concert is a testament to the family's strength and unity during challenging times. As they navigate Kate's continued treatment, special moments like these provide both a respite and cherished memories.