Kate, who typically dresses down for courtside events in sneakers and jackets, instead wore a black and white patterned Smythe blazer over a turtleneck sweater and black jeans for the appearance. She accessorized her look with morganite and diamond cushion drop earrings from one of her go-to jewelry designers, Kiki McDonough.
She even left her sneakers at home and stepped out in a pair of black heeled booties. (Of course, she’s had some practice — back in 2013, Kate famously took the volleyball court in sky-high wedges!)
Both Kate and William joined in on coaching sessions for indoor athletics. The royal mum grabbed a tennis racket to take part in one of her favorite sports.
They also participated in a game of Boccia, one of the sports provided by Sport for Confidence, a social enterprise that provides sporting opportunities to individuals who face barriers to participation.
The pair then walked through to the gymnastics center, home of South Essex Gymnastics Club. They watched Olympic-standard gymnasts in training as well as a pre-school session run by Coach Core apprentices and graduates.
Of course, the royal parents of three made sure to greet some of their youngest fans, offering hugs and handshakes.
Coach Core was launched to build on the legacy of the London Olympics in 2012 by the Royal Foundation, the charity organization led by Prince William and Kate Middleton along with Meghan Markle and Prince Harry.
Following Meghan and Harry’s visit, the Kensington Palace press office announced that the Royal Foundation had been awarded a $1.3 million National Lottery grant from Sport England to double the reach of Coach Core by adding 10 new sites in England over the next three years.
Over the years, the royals have been heavily involved in the program. In Nov. 2017, Kate visited the Aston Villa Football Club to see the work of Coach Core in action. A month early, she was joined by Prince William and Prince Harry at the Coach Core graduation ceremony.
This article originally appeared on our sister site, PEOPLE.