Royals British Royal Family British Royal Family News Queen Elizabeth Celebrates U.K. Mother's Day with Her Mom and Sister in Royal Throwback: 'Very Special' Elizabeth and Princess Margaret appear in Buckingham Palace's Mothering Sunday tribute By Nicholas Rice Nicholas Rice Nicholas Rice is a Senior Editor for PEOPLE Magazine. He began working with the brand as an Editorial Intern in early 2020, before later transitioning to a freelance role, and then staff positions soon after. Nicholas writes and edits anywhere between 7 to 9 stories per day on average for PEOPLE, spanning across each vertical the brand covers. People Editorial Guidelines Published on March 27, 2022 11:49AM EDT Photo: Steve Parsons/Pool/AFP via Getty Happy Mother's Day, Queen Elizabeth! In honor of the holiday, which is also known as Mothering Sunday in the U.K. and celebrated this year on March 27, The Royal Family's official Instagram account shared a throwback photograph of the Queen, 95, from her younger days. In the sepia-toned photo, the British monarch can be seen posing beside her mother Queen Elizabeth the Queen Mother and her younger sister, Princess Margaret. "Wishing all those celebrating today a very special Mothering Sunday," the caption of the post read, beside a tulip emoji. Prince George, Princess Charlotte and Prince Louis Bake for Kate Middleton on Mother's Day in the U.K. The hashtag "#MothersDay" was also added, alongside a photo credit to the Royal Collection Trust. Prince Charles and Camilla, Duchess of Cornwall, also celebrated Mother's Day in the U.K. on Instagram Sunday, where they uploaded photographs of themselves with their respective mothers in a post on their joint Clarence House page. "On Mothering Sunday, we celebrate all the Mothers in our lives and are thinking of those who cannot be with their Mothers today," the pair captioned their post. Can't get enough of PEOPLE's Royals coverage? Sign up for our free Royals newsletter to get the latest updates on Kate Middleton, Meghan Markle and more! Prince William and Kate Middleton, meanwhile, ended their tour of the Caribbean islands and made it home in time to celebrate Mother's Day with their three kids: Prince George, 8, Princess Charlotte, 6, and Prince Louis, 3. While Kate, 40, was heading back to her home country, she wished all the moms from the media, who were accompanying the couple on their plane, a happy Mother's Day as well. Last year, William, 39, and Kate's children paid tribute to their late grandmother Princess Diana in a special way on Mother's Day. RELATED VIDEO: Prince Harry Arranged for Flowers to Be Laid at Princess Diana's Grave on U.K. Mother's Day At the time, Kensington Palace shared a trio of handmade cards from Prince George, Princess Charlotte, and Prince Louis on social media. "This year Mother's Day will be different once again. Many of us will be apart from our loved ones, but looking forward to a time in the not too distant future when we can give our mother a hug again," read the Instagram post. "But for those experiencing bereavement, today may be particularly challenging." Prince William and Kate Middleton Fly Home from The Bahamas After Addressing Tour Controversy "Each year on Mother's Day, George, Charlotte and Louis make cards remembering their Granny, Diana, for William," the post continued. "Whatever your circumstances, we are thinking of you this Mother's Day." Prince William, who is a patron of Child Bereavement UK, lost his mother in 1997, when he was 15 and his brother Prince Harry was 12.