Prince Louis wears matching outfit and expressions to Prince William when he was a kid

Queen Elizabeth kicked off her Platinum Jubilee celebrations with Trooping the Colour on Thursday.

And while all attention was firmly on Her Majesty as she marked her 70 years on the throne as Britain's longest-reigning monarch, there was a little royal who stole the show.

Prince Louis, dressed in the same sailor suit his dad was back in 1985, made a series of animated faces and covered his ears as the loud fly over went past Buckingham Palace.

READ MORE: Why most people almost missed Prince William at Trooping the Colour parade

Standing on the balcony alongside his older siblings Prince George and Princess Charlotte, the four-year-old was seen covering his ears as the fighter planes flew over.

He also pulled a number of faces as he waited in between aircraft displays, drawing further comparisons to his father.

READ MORE: What Kate Middleton is wearing to the Trooping the Colour

Prince William was seen on the famous Buckingham Palace balcony alongside his mother, Princess Diana, as a two-year-old at the time.

He too was seen pulling faces at the planes and the crowds.

Fast forward to the next generation and the aircraft flyovers never fails in drawing out the cutest expressions from the young royals.

Previously Prince George was seen making similar facial expressions in his first few years at Trooping the Colour.

While at Prince William and Kate Middleton's royal wedding, it was young bridesmaid Grace Van Cutsem who was seen covering her ears.

The moment occurred as she stood out on the balcony with the newlyweds and thousands cheered as they shared their first public kiss.