Kate also met with young people taking part in the Coach Core apprenticeship program, a charity Prince William, Kate and Prince Harry actively endorse. The program, supported by the Royal Foundation, trains people between the ages of 16 and 24 to become coaches, mentors and role models in their local communities.

On Court 4 The Duchess gets involved in a @wearecoachcore training session, which is being delivered by Coach Core apprentices. pic.twitter.com/98s9mdwUgp

— Kensington Palace (@KensingtonRoyal) October 31, 2017

Kate became a patron of the Lawn Tennis Association in December, a role she took over from Queen Elizabeth II, who was patron for 64 years.

\"PHOTO:
Eamonn M. McCormack/Getty Images
PHOTO: Catherine, Duchess of Cambridge stands on a tennis court at the Lawn Tennis Association in London, Oct. 31, 2017.
>

Kate also watched a demonstration by British wheelchair tennis champion Alfie Hewitt and met tennis pro Johanna Konta and some of the U.K.’s top junior tennis players.

The Duchess joins in with a coaching session with Tennis for Kids Ambassador @JoKonta91. ?? pic.twitter.com/bl4n10OtxQ

— Kensington Palace (@KensingtonRoyal) October 31, 2017

The Duchess meets x2 Paralympic medallist & @Wimbledon & @usopen Wheelchair Doubles Champion Alfie Hewett. pic.twitter.com/elCsW7s6Pp

— Kensington Palace (@KensingtonRoyal) October 31, 2017

Next HRH meets some of the UK's top junior tennis talents & their support teams to learn what it takes to become a tennis champion. pic.twitter.com/ps01vk8RVL

— Kensington Palace (@KensingtonRoyal) October 31, 2017

The Duchess of Cambridge spoke about her love for tennis in a documentary that aired on the BBC in June. She described how watching Wimbledon matches made her hope that she too could be a tennis star.

HRH takes her seat in the Royal Box to watch @andy_murray vs @AlexanderBublik- the first Centre Court match of The Championships #Wimbledon pic.twitter.com/9ZTZnDaQas

— Kensington Palace (@KensingtonRoyal) July 3, 2017

“It inspires young people including myself,” she said. “Every time Wimbledon is on I am thinking, ‘Yes, I could do the same’ and get out the racket. Sadly, not the same results.”

Kate has a tennis court at the country home, Anmer Hall, she shares with Prince William and their children. William, also 35, and Kate are said to enjoy a fierce rivalry on the court.

\"PHOTO:
Neil Hall/EPA
PHOTO: Catherine, Duchess of Cambridge plays tennis at the Lawn Tennis Association in London, Oct. 31, 2017.
>

Kate is gradually returning to public duties since announcing her pregnancy on Sept. 4. Kensington Palace revealed at the time Kate was suffering from hyperemesis gravidarum, or severe morning sickness.

Kensington Palace announced Monday that next week Kate will attend a benefit dinner for the Anna Freud National Centre for Children and Families, which she serves as royal patron.

Kate attended a Buckingham Palace reception on Oct. 10 to mark World Mental Health Day after taking time out of the public eye.

\"PHOTO:
Heathcliff OMalley/Reuters
PHOTO: Catherine Duchess of Cambridge celebrates World Mental Health Day at Buckingham Palace in London, Oct. 10, 2017.
>

One week later, Kate made a surprise appearance with William and Prince Harry at a children's charity event in London where she danced with Paddington Bear.

\"PHOTO:
Chris J Ratcliffe/AFP/Getty Images
PHOTO: Britain's Catherine, Duchess of Cambridge, dances with a person in a Paddington Bear outfit by her husband Britain's Prince William, Duke of Cambridge as they attend a charities forum event at Paddington train station in London, Oct. 16, 2017.
>

She also joined William and Harry on Oct. 18 at the graduation ceremony of more than 150 Coach Core apprentices at London Stadium.

\"PHOTO:
Arthur Edwards/AFP/Getty Images
PHOTO: Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge share a light moment as Britain's Prince Harry looks on during their visit to attend the graduation ceremony, in east London, Oct. 18, 2017.
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