Kate Middleton’s children Princess Charlotte, Prince George and Prince Louis match in navy at Trooping the Colour 2024

They’re true blue.

Prince George, Princess Charlotte and Prince Louis joined Kate Middleton and Prince William at Saturday’s Trooping the Colour 2024 celebrations, dressed in matching navy outfits.

The young princes twinned in dapper double-breasted suits, white shirts and bright blue ties for the annual celebration of the reigning monarch’s birthday.

Prince Louis, 6, wore shorts, while George, who will celebrate his 11th birthday next month, sported slacks.

The jackets appear to be the same ones the young royals wore to the same event last year, though Prince Louis wore bright red shorts in 2023 to complement his tie.

Princess Charlotte, 9, went for a navy-and-white sailor dress similar to the red-and-white one she wore last year. She accessorized with white Papouelli Mary Jane flats and a matching bow in her hair.

The Princess of Wales, 42, made her triumphant return to public life Saturday after six months spent privately recovering from abdominal surgery and chemotherapy for an unspecified form of cancer.

For the occasion, Middleton selected a white Jenny Packham dress trimmed with a black-striped belt and bow at the collar. She added a Philip Treacy hat, white Jimmy Choo pumps and a Mulberry clutch ($750).

She wore Cassandra Goad pearl earrings ($6,061) and a brooch featuring the insignia of the Irish Guards, of which she serves as honorary colonel.

Queen Camilla opted for a white hat and mint green coat dress, while Prince William and King Charles both wore red uniforms with their full regalia.