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The World Cup has started in South Africa with a colourful opening ceremony.
African dancers and singers have been performing on the pitch.
Here in Trafalgar Square, hundreds of fans have gathered to watch it all be beamed back on a giant screen.
It marks the start of the 4 weeks of non-stop football.
England play the US tomorrow, and supermarkets are predicting that tomorrow could be their busiest day since Christmas.
With most people expected to watch the England game at home, they're planning for a huge increase in sales of things like beer, pizzas and barbeque food.