A royal fan took to social media after noticing King Charles’s 20-year-old niece attending the same event as her aunt, the Princess Royal.

The royal fan posted the images of Louise alongside the caption: “Is it just me or is that the lovely Lady Louise in uniform at the back at the Edinburgh Tattoo?!!! Greeting her aunt Anne and uncle Tim.”

Lady Louise Windsor has been spotted performing her new role as she greeted Princess Anne.

A royal fan took to social media after noticing King Charles’s 20-year-old niece attending the same event as her aunt, the Princess Royal.

The royal fan posted the images of Louise alongside the caption: “Is it just me or is that the lovely Lady Louise in uniform at the back at the Edinburgh Tattoo?!!! Greeting her aunt Anne and uncle Tim.”

The pictures indeed show Louise at the Royal Edinburgh Military Tattoo at Edinburgh Castle, which Princess Anne and her husband Sir Timothy Laurence also attended.

The event, which takes place in August, is attended by Princess Anne every year to fulfil the prestigious role of Salute Taker for the Show at Edinburgh Castle’s Esplanade.

Louise, who has “fallen in love” with the idea of pursuing a career in the army, was likely there due to being a member of the St Andrews University Officers’ Training Corps.

This organisation provides military training for students.

The young royal is currently studying at St Andrews University, the same institution Prince William and Princess Kate attended as students.

The daughter of the Duke and Duchess of Edinburgh is keen to serve her country and King Charles, according to an insider.

The source told The Sun: “She talks about being very keen on a career in the military, serving the King and country.

“She is all about the Army Cadets and has fallen in love with it.”

Prince Edward’s daughter is also set to make history as the first female royal to serve in the military since the late Queen Elizabeth II.

According to Louise’s LinkedIn page, which has since been taken down, the 20-year-old is interested in pursuing a career in “the military, diplomacy or law”.

Louise has likely already been inspired by her late grandmother, with whom she is said to have shared a close relationship.

As part of her training, Louise will be undertaking Reserve Officer modules designed to fit around her degree, which will instruct her in everything from how to wear a uniform correctly, to leading others in stressful situations