Duchess of Cambridge and Queen Elizabeth Delight Crowds in London

The Duchess of Cambridge, alongside her grandmother-in-law Queen Elizabeth, caused quite a stir in London during their visit to King's College on Tuesday.

Following this momentous event, the Duchess embarked on a solo engagement at the Foundling Museum, where she was recently named a patron.

During her visit to the museum, Kate captivated the crowd of royal enthusiasts by borrowing a move from her three-year-old daughter, Princess Charlotte.

Videos shared by Danielle Stacey, a royal correspondent for Yahoo UK, captured the Duchess's unexpected turn and wave as she entered the museum.

This signature move, previously seen from Princess Charlotte, never fails to please the onlookers.

The resemblance between Kate's gesture and Charlotte's adorable royal greeting did not go unnoticed.

At Tea Cambridges, a popular royal fan account, pointed out the striking similarity.

Princess Charlotte first showcased this charming wave while on her way to meet her baby brother, Prince Louis, at the Lindow Wing of St. Mary's Hospital in April of last year.

As Prince William held hands with both Charlotte and Prince George, the little princess acknowledged the crowd by waving as they gathered outside the hospital.

Just before entering, she paused, turned back, and coyly waved once more.

It was a perfect moment!

Since then, Charlotte has made this move her trademark, often pausing on stairs for a last-second photo opportunity with a wave.

She even displayed her royal wave at her uncle Prince Harry's wedding to Meghan Markle last year.

As part of the bridal party, Charlotte climbed the steps to St. George's Chapel while holding her mother's hand, but she couldn't resist stealing glances at the adoring fans gathered outside.

Months later, at Princess Eugenie's wedding to Jack Brooksbank, Charlotte continued her performance.

Battling against strong winds, she climbed the stairs outside St. George's Chapel without holding either of her parents' hands.

Yet, she managed to turn and wave to the crowd, displaying her unwavering charm.

It seems that Charlotte's 10-month-old brother is following in her footsteps.