Perhaps you could call it the Mexican Royal Wave.
Kate Middleton was in high spirits at Wimbledon today as she joined in all the fun with her father Michael.
The Duchess of Cambridge, 39, attended the men's wheelchair singles final of The Championships. A laughing Kate then followed the rest of the crowd by taking part in a Mexican wave.
The Duchess is among tennis fans watching the men's singles final on Centre Court between Novak Djokovic and Matteo Berrettini.
For her day out with her dad the Duchess was pretty in a pink midi dress with a matching floral face mask.
She completed her elegant look with a pair of nude heels and a clutch bag.
The Duchess wasn't the only famous face at the tennis today.
Hollywood star Tom Cruise made sure not to miss any of the action, as he stopped by the All England Lawn Tennis and Croquet Club for another action-packed day on court.
The Mission: Impossible star, who had also been seen in the crowds earlier in the weekend, wore a sharp suit for his day out in London.
Novak Djokovic is hoping to take a sixth Wimbledon crown and record-equalling 20th grand slam title.
The 34-year-old Serbian will move level with rivals Roger Federer and Rafael Nadal if he beats seventh seed Matteo Berrettini in the final on Centre Court.
Italian Berrettini, 25, is playing in his first grand slam final.
