Her siblings Pippa and James and her mother Carole Middleton have all enjoyed days out at Wimbledon during the two-week tournament so far, so it was only a matter of time before Kate and Prince William were seen at the famous tennis ground.
The Duke and Duchess of Cambridge arrived at the All England Lawn Tennis and Croquet Club with with AELTC Chairman Philip Brook before the men's quarter-finals kicked off on Centre Court.
Duchess Kate showed off her chic summer style in a cream dress paired with a straw clutch and a red pashmina but the best picture from the day had to be this...
The couple weren't the only royals who were captured by the tennis, though. William and Kate were joined by Princess Beatrice - who looked lovely in a bottle green shift dress and white blazer - and her long-term boyfriend Dave Clarke.
The royals were at Wimbledon to show their support for Andy Murray on day 10 of the tournament, but there was one guest who looked more nervous than most.
Murray's girlfriend Kim Sears was seen arriving ahead of her boyfriend's match against the Bulgarian player Grigor Dimitrov in a coral shift dress from Goat.
Good thing Kate wasn't wearing her recent purchase from the Goat sale - there could have been an awkward 'same dress' moment.
Clearly Kate didn't stick to her new half-up, half-down style from her recent visit to a North London school either. Still, it's good to know she suffers bad hair days too.
LOVE KATE'S STYLE? See plenty more below: