Typically,Kate has attended this eventwearing shades of pine and emerald green.
That year she was pregnant with Princess Charlotte, and it was believed she chose comfort over tradition.
The slim-fitting coat dress featured defined shoulders, along with a straight skirt and belted waist.
Kate took on the role in December when King Charles gave the position to her.
He then made William honorary colonel of the Welsh Guard since he’s now Prince of Wales.
