In a nod to her Scottish title as the Countess of Strathearn, Kate wore a soft yellow coat dress specially made for her by Emilia Wickstead, and she carried a scarf decorated in the classic Strathearn tartan pattern.
He received the title from his grandmother, Queen Elizabeth II – the highest honor she can bestow in Scotland – around the time of his 30th birthday last month.
Kate and William met and fell in love at St. Andrews University, just across the Firth of Forth from the Scottish capital of Edinburgh, where the grand ceremony took place at St. Giles Cathedral.
A pipe band heralded the beginning of the festivities before the royals arrived together. Kate had a few words and a smile with a church official and was then escorted into the cathedral, while William joined other members of the Order of the Thistle. After several minutes, he walked to the cathedral alongside his aunt, Princess Anne.
Like the other knights, including the Queen and the Duke of Edinburgh, William wore a deep-green velvet cloak and matching hat decorated with a white ostrich feather. He has already been seen with his Order of the Thistle medal on his Colonel of the Irish Guards uniform at ceremonial occasions this summer.
This is William’s second honorary knighthood. He was invested in the Order of the Garter at Windsor Castle in 2008.
It comes a day after the couple enjoyed a summer afternoon at Wimbledon, watching Briton Andy Murray reach the semifinals.