'She don't know a thing about tennis!' #Beyonce is mocked on Twitter over her hilarious 'delayed reaction' to #SerenaWilliams' Wimbledon victory

It was a moment that propelled Serena Williams into tennis history books...but it seemed to pass the biggest star in the audience by.

Beyonce, 34, joined husband Jay-Z and sports fans on Centre Court on Saturday afternoon to watch the women's world number one - and her close friend - Serena clinch her 22nd career title.

But it seems the global pop icon isn't exactly au fait with how you win a tennis match. When Serena hit the winning shot to defeat opponent Angelique Kerber 7-5, 6-3, the crowd leapt to its feet - but it took Queen Bey a little longer to register what had actually just happened.

With cameras poised to capture the Lemonade singer's reaction; her momentary confusion over whether Serena had actually won or not was broadcast to the world.

While Jay-Z jumped to his feet, Beyonce appeared to be a little confused as to what the point-scoring actually meant, finally rising to her feet when she heard the roar of the SW19 audience.

On court, Williams fell spread-eagled on her back on to the Centre Court Grass after dispatching Kerber in two sets, a huge grin across her face.

The moment saw the 34-year-old athlete making history - by drawing her level with Steffi Graf as the joint-most successful women in tennis in the Open Era.