Adorable moment royal guard inspects little fan in his own miniature uniform and bearskin – before excited lad marches with them (and struggles to keep up)

This is the heartwarming moment two royal guards made a rare break in protocol to greet a little fan wearing his own miniature uniform and bearskin.

Little Frank, who has gained a huge following on social media for his adorable videos where he dresses up in different soldier outfits, couldn’t believe his luck when two guards stopped to talk to him at the Tower of London.

Footage shows the little boy standing at attention as guards walk across the cobbled grounds. When they see him, they march up to him and greet him before engaging in conversation.

As Frank greets back, one of the guards says: ‘Good evening young man, how are you? I look very smart today.’

He then compliments Frank on his shiny shoes and tells him he ‘did well’. Frank and the guards then greet each other again before marching away.

This is the heartwarming moment two royal guards made a rare break in protocol to greet a little fan wearing his own miniature uniform and bearskin

The little boy chased the guards but struggled to keep up as they marched through the Tower of London

The little boy chased the guards but struggled to keep up as they marched through the Tower of London

Frank (pictured), who posts videos on his TikTok account @frankthesoldier – which has more than 162,000 followers – melted hearts as social media users commented on the footage

Frank (pictured), who posts videos on his TikTok account @frankthesoldier – which has more than 162,000 followers – melted hearts as social media users commented on the footage

Eager to see more of the action, Frank marches after them, but struggles to keep up.

At one point he turns to his father and says, “Daddy, did you see him greet me?”

The military is known to adopt an expressionless posture as they are generally not allowed to communicate with members of the public.

They can even be fined £200 if they laugh or smile and have to work in all weather conditions.

Frank, who posts videos on his TikTok account @frankthesoldier – which has more than 162,000 followers – melted hearts as social media users commented on the footage.

His biography says: ‘My name is Frank, and I love the Royal Guard.’

He has earned 3.3 million likes for his sweet videos so far.

Last August, Frank went viral again when he received a special nod from one of the troops who greeted him at St. James’ Palace.

Frank stands to attention as the guards walk by

The guards stopped to talk to him

Frank stood to attention as the guards walked by (left) and then stopped to talk to him (right)

He followed them around the Tower of London and at one point asked his father,

He followed them around the Tower of London and at one point asked his father, “Daddy, did you see him greeting me?”

The child watched in awe as he watched the soldiers march past him in unison.

A heartwarming video filmed by his father shows the moment Frank stood up and saluted the soldiers before someone in the back exchanged a respectful nod with the little boy.

Frank is so happy that he appears to be in disbelief for a moment before giving the camera a thumbs up.