The Queen, Kate Middleton and Prince William Share Messages for Lilibet on Her First Birthday

Alexi Lubomirski Meghan Markle and Prince Harry's 2021 holiday card with Archie and Lilibet

The royal family is wishing Meghan Markle and Prince Harry's daughter Lilibet a "very happy" first birthday.

The Duke and Duchess of Sussex's daughter is celebrating her first birthday on Saturday at the family's Frogmore Cottage home amid their visit to the U.K. for Queen Elizabeth's Platinum Jubilee.

The Sussexes are spending the special day privately as a family.

"🎈Wishing Lilibet a very Happy 1st Birthday!" Lili's great-grandmother Queen Elizabeth shared on her official social media account.

Kate Middleton and Prince William, who are spending the day in Wales with their eldest children Prince George and Princess Charlotte, also shared a message on Twitter, writing: "Wishing a very happy birthday to Lilibet, turning one today! 🎈"

Lilibet's grandfather Prince Charles and Camilla, Duchess of Cornwall tweeted: "Wishing Lilibet a very happy 1st birthday today! 🎂"

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Meghan and Harry are thought to be introducing their daughter to her great-grandmother the Queen for the first time during the family's visit. Lili is named for the monarch, whose childhood nickname was Lilibet.

The visit will also give 3-year-old Archie the opportunity to see his great-granny face-to-face. The Duke and Duchess of Sussex's son has been video chatting with the Queen since the couple moved to California in 2020. Archie was born in the U.K. and had a very memorable first encounter with the Queen, which resulted in a history-making photo.

Frogmore Cottage is only a half-mile from the Queen's home at Windsor Castle, making a visit between the family members very convenient.

On Friday, Meghan and Harry joined the royal family for a thanksgiving service in the Queen's honor at St. Paul's Cathedral, but they did not publicly spend time with Harry's immediate family members.

Karwai Tang/WireImage Meghan Markle and Prince Harry

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The complex dynamic between William, 39, and Harry, 37, has had a ripple effect across the wider family — including, of course, Meghan and Harry's decision to step back from senior royal duty and relocate with their family to California.