Princess Charlotte delighted royal fans with an adorable "shy wave" just after mum Kate greeted crowds with her own wave.
The Princess of Wales and her daughter had just attended the traditional Easter Sunday service at Windsor Castle this morning alongside other senior royals.
Charlotte, who was wearing a pretty blue spring-styled pattered dress, noticed her mum wave at spectators and moments later did the same, The Express reports.
Royal fans noticed the mini-me moment with one writing on Twitter: "I love this! A mummy & Charlotte moment... so much love between them it's palpable."
Another wrote: "So adorable Princess Charlotte waits for The Princess of Wales to join her. Not without my mummy."
And a third said: "William and Catherine are doing such a lovely job raising their children. So beautiful to see children show respect to adults."
King Charles and Camilla, Queen Consort, were also in attendance, marking the first Easter Sunday service with Charles as monarch.
The Princess of Wales was wearing a stylish blue Catherine Walker coat and matching pill-box hat.
The theme of blue set the scene today among royal attendees, with the King and Queen Consort also donning matching royal blue outfits.
The Prince and Princess of Wales were joined by their three children, Prince George, nine, Princess Charlotte, seven, and four-year-old Prince Louis.
William and Prince George walked side-by-side wearing matching navy suits while Princess Charlotte held her dad's hand as they arrived.
For Prince Louis it was his debut as this was the first time he had come to an Easter service - and he was seen wearing a smart suit jacket and light blue shorts.
Among other royal attendees were the Duke and Duchess of Edinburgh who arrived with their son James, the Earl of Wessex.
Princess Beatrice came with her husband, Eduardo Mapelli Mozzi along with sister Princess Eugenie and her husband Jack Brooksbank. Mike and Zara Tindall were also spotted with their two daughters Mia and Lena.
The service itself had a poignant undertone for the royal family due to the fact it was the first one without the late Queen Elizabeth II. The chapel is also where the late Queen's final resting place is.
The late monarch was buried at the small King George VI Memorial Chapel alongside her husband Prince Philip, the late Duke of Edinburgh. Her father George VI and the Queen Mother are also buried there with all their names inscribed in a black stone slab on the floor.
