Kate and William attended day 13 of the tennis festivities in London on Sunday.
She sported a major pop of color in her bright yellow dress while greeting her adoring fans.
William, who dressed in his usual debonair attire, must have been saying something funny as Kate could not stop smiling throughout the day.
Her laughter can almost be heard through the photo of them having a laugh, as the two of them looked absolutely joyful next to one another for the fun day out.
Kate was in a similar mood yesterday when she attended Wimbledon with her new sister-in-law Meghan Markle.
What are your thoughts on Kate's upbeat attitude? Sound off in the comments!