Kate Middleton & Prince William Share an Adorable Smile During Garter Day

Posted Monday June 16, 2014 3:01 PM GMT

After their relaxing Father’s Day with son Prince George, the Duke and Duchess of Cambridge got all spiffy for a royal affair on Monday (June 16).

Kate Middleton looked on from the crowd in a gorgeous sky blue Christopher Kane coat and hat from Lock & Co. as her hubby Prince William walked in the annual procession of knights at Windsor Castle.

The royal family gathered for Garter Day, which is a celebration of the oldest order of chivalry.

Other guests included Sophie, Countess of Wessex, who arrived with Kate, along with Queen Elizabeth and Prince Philip.

Photo Credit: Getty Images