The duo began their day at the Games by watching the swimming. At one moment, the Duchess could be seen pulling back Charlotte’s hair away from her face.
Prince William was also present at the Sandwell Aquatics Centre.
The Duke and Duchess of Cambridge were not joined by their other two children, Princes George and Louis.
Also present, however, was the Earl and Countess of Wessex and their children, Lady Louise and James.
Prince Edward is Vice Patron of the Commonwealth Games.