This brotherly bond is royally cute.

Prince George and Prince Louis had an adorable conversation during Trooping the Colour this weekend, according to a lip reader.

The future king, 11, and his 7-year-old brother chatted while riding in a carriage on Saturday.

Kate Middleton, along with their daughter Princess Charlotte, accompanied by their youngest child, rode on the opposite side of the carriage, all dressed in coordinating aquamarine outfits, for the traditional annual ceremony.

The Sun reported Monday that Louis asked his brother, “Should I wave?”

George allegedly replied, “It’s up to you,” before noting that he couldn’t “believe how sunny it” was outside.

The lip reader claimed Louis responded by saying, “Let’s do it together.”

The siblings, who wore matching navy suits with red ties, subsequently smiled and waved at the onlookers.

Following the carriage procession, the family reunited with Prince William and their grandparents, King Charles III and Queen Camilla, on the balcony of Buckingham Palace.

Louis was given a firm command by the Princess of Wales after watching the Red Arrows flypast.

“National anthem. Louis, stand,” Middleton said, lip reader Jeremy Freeman told The Mirror.

The youngest child of Kate Middleton and Prince William is known for capturing attention with his playful antics at public gatherings, such as playfully sticking out his tongue and covering his ears.

Charlotte, meanwhile, has made headlines for correcting her brothers’ behavior on multiple occasions over the years.

The princess yanked Louis’ hand away from his face and scolded him during Queen Elizabeth II’s Platinum Jubilee Pageant in 2022.

She was also spotted correcting George’s posture at the same event.

Two years later, Charlotte sternly spoke to Louis when he danced during the Trooping the Colour ceremony.