IT took John Constable nearly five months to paint The Hay Wain in 1821. Now Rolf Harris, who lives with his wife in Bray, and hundreds of other artists have just one day to recreate the famous painting, currently on display in The National Gallery, London.

But that's not all. Multiply the size of the canvas several times to a gigantic 30 ft by 20 ft the size of a London double-decker bus and you start to get the picture.

Rolf Harris will be live from Trafalgar Square on Sunday for, Rolf on Art The Big Event. A new series focusing on Great Masters.

The Hay Wain was painted by John Constable.

Rolf will provide an insight into the life of this great painter and find out how a sketch of a horse-drawn cart in Flatford, Suffolk, led to one of the country's most famous and well loved paintings.

With live links from Flatford, local artists from Constable's birthplace, and three generations of the Constable family will make their contribution.

In London Rolf will lead nearly 150 artists including school children, doctors, train drivers, botanists, and a few famous faces, as they race to re-create Constable's masterpiece.

Rolf says: "Art is something for everyone to enjoy in one way or another.

"All you need is passion and inspiration, and I hope that through this event we will pass that on to the viewers watching at home.

"I can't wait to join artists of all styles to work on one of the most ambitious paintings I have ever attempted in my career."

BBC ONE on Sunday, September 25 at 5.45pm