“All set for The King’s Birthday Parade!” their team wrote in the caption. In the clip, Prince Louis waved as he waited with Princess Kate and his siblings to be seated in the carriage.

At the Platinum Jubilee Pageant on June 5, 4-year-old Prince Louis went viral for his adorable antics, from making faces at mom Kate Middleton to excitedly dancing ... the 70th birthday of Prince ...