Mayor Ken Livingstone said: "On 8 May 1945 thousands of Londoners, who had endured the blitz and the privations of war, created one of the greatest impromptu parties London has ever seen when they crowded into Trafalgar Square to celebrate.
"Sixty years on we are going to do it all over again to remember the generation that sacrificed so much to preserve our liberty."
Joan Stayn, was 15 in May 1945 when she joined the throng. in cedntral London On the BBC's special website www.bbc.co.uk/ww2 she writes: "My mother said to me: 'Let's go to the West End, Joan, and join in the celebrations'.
"So we jumped on a train from Clapham Junction to Victoria and were astounded to see such huge, swirling crowds. What an incredible sight.
"Hundreds of people all waving f lags were drifting in from Piccadilly and Regent Street and thronging down the Mall. They sang their hearts out with many of the war songs, particularly the Vera Lynn favourites."
She adds: "People climbed on anything they could - statues, buildings, cars, and every lamppost was scaled.
"Dustbin lids were banged and the hysterical crowds were totally beyond any order. Nothing mattered, only freedom, that we had survived it all.
"The experience will be with me for ever."
The 15,000 tickets are available from today, by telephone on 08700 100 160 or online at www.bbc.co.uk/veday.
The Trafalgar Square concert will be broadcast on screens in cities across the UK.
