Duke and Duchess of Cambridge do the wave while cheering on Andy Murray at the Olympics

The Duke and Duchess of Cambridge really got into the Olympic spirit when they joined fellow tennis onlookers by doing the wave in the stands.

The royal couple was in London again today to cheer on Andy Murray at the men’s tennis Quarter Finals, where they really got into cheering on Team GB.

According to E! Online, Murray played against Spain's Nicolas Almagro. But this isn’t the first time that Kate Middleton and Prince William cheered him on. They were also present at Wimbledon when he played there. Their enthusiasm must have paid off, because Murray has progressed to the Semi-Finals.

Middleton wore another recycled dress to the event, the blue Stella McCartney dress she wore last month to the National Portrait Gallery Opening. Her husband wore his standard navy blazer, sunglasses and white shirt.

Middleton and Prince Wililam also cheered on William’s cousin Zara Phillips, where she won the silver with Great Britain’s equestrian team, becoming the first royal to win a silver medal.

They lent their support along with Prince Harry, Camilla, Duchess of Cornwall, Princess Eugenie and Princess Beatrice.