Their royal height-ness have arrived!

Prince George, Princess Charlotte and Prince Louis looked all grown up at the “Together at Christmas” carol service in London on Friday.

The little ones coordinated in navy ensembles at the Westminster Abbey event.

George, 12, towered over Louis, 7, as the brothers matched their dad, Prince William, in blue suits.

Charlotte, meanwhile, sported a dress and tights of the same color, with her hair pulled back with a large bow.

The 10-year-old princess, whose outfit featured an oversized white collar and long sleeves, completed her look with black ballet flats.

The siblings’ mom, Kate Middleton, opted for a green coat dress and a pair of black boots.

The Princess of Wales, 43, started her annual “Together at Christmas” carol service in 2021, wit

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