Kate Middleton, Prince William, & Prince Harry Make Our Favorite Royal Trio!

Prince Harry, Kate Middleton (aka Catherine, Duchess of Cambridge), and Prince William are all smiles while standing on the balcony during the Trooping the Colour Parade on Saturday (June 14) at Buckingham Palace in London, England.

The royal trio was there to celebrate the guys’ grandmother Queen Elizabeth II‘s 88th birthday.

While arriving for the ceremony, the trio rode in a carriage alongside their step-mom Camilla, Duchess of Cornwall.

FYI: Kate is wearing an Alexander McQueen coat dress and a Jane Taylor Millinery hat.

20+ pictures inside of Kate Middleton and the princes at the ceremony…