During this great family event in Trafalgar Square hundreds of artists with join Rolf Harris for a huge free art event to recreate one of Holbein's famous depictions of Henry VIII on a giant 10 metre x 5 metre canvas.
For one day, the Square and many neighbouring galleries including the National Gallery and National Portrait Gallery will be taking visitors back to the Tudor period with an exciting programme of free art activities.
The climax of the day will see the great Holbein painting peiced together on a massive scale and aired on the BBC.
For more information see the below link.