Kate, who is patron of the All England Lawn Tennis Club, was grinning from ear to ear as she enjoyed watching the ladies’ final between Elena Rybakina and Ons Jabeur.
WATCH: Kate Middleton makes surprise appearance at Wimbledon
She later awarded Elena the trophy after winning 3-6, 6-2, 6-2. Elena is the first tennis player from Kazakhstan to win a Grand Slam singles championship.
Prince William, who is not present at the tournament, is due to join his wife to watch the men’s final on Sunday, which will see Nick Kyrgios go up against Novak Djokovic.
The Duchess opted for a stunning yellow Roksanda dress for the sun-soaked occasion.
Kate looked so stylish as she rocked gorgeous sunglasses for the sunny occasion
Whilst fixated on the match from the stands, Kate was spotted looking ultra-glam in a fabulous pair of sunglasses.
The Duchess was also armed with a straw hat to help battle against the high temperatures
The mother-of-three also had with her a chic straw hat which she was captured wearing around the event. .
Duchess Kate was delighted as she took her seat
Kate is an avid tennis fan.
Back in 2017, during an appearance on BBC documentary, Sue Barker: Our Wimbledon, Kate shared some insightful anecdotes about her tennis-loving family - including one moment when her dad Michael Middleton left her feeling "mortified".
Kate is truly glowing
She recalled the moment her father tried to play it cool in front of the former British number one tennis player Tim Henman, telling broadcaster Sue: "My father is not going to appreciate this but we were walking past Tim Henman and we had just seen Sampras play.
"My dad said very coolly, 'Hi Pete'. I was mortified!"
Kate looks spectacular in her yellow dress
Speaking about her love for the sport, Kate said: "I have watched Wimbledon, that was very much part of my growing up.
"It's such a quintessential part of the English summer, and I think it really inspires youngsters, myself, it inspired me when I was younger to get involved in the game. It hasn't changed either, I think that's what's so wonderful."
The Duchess was spotted chatting with ELTC chairman Ian Hewitt
Laughing, Kate also revealed: "Roger [Federer] is my mother's heartthrob.
"I don't think she will mind me saying that! I think he probably knows that too."
The Duchess awarded Elena her trophy
Earlier this week, Kate and Prince William were among the spectators at Wimbledon and were joined by her parents Michael and Carole.
They watched Novak Djokovic beat Jannik Sinner in the quarter-final before witnessing British hopeful Cameron Norrie's victory over David Goffin.
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