A 350 foot image of the singer - who is widely known as the Forces' Sweetheart - will be seen in Kent and Spitfires will fly overhead to honour her famous 1942 song White Cliffs of Dover.
From 2pm to 4pm guests and residents will be sharing their memories of Dame Vera Lynn in anticipation of the main event - a rendition of the popular war-time song, We'll Meet Again.
"We have sent her a card to congratulate her on a happy birthday and to thank her for all she did for this country and our boys in Burma during World War Two".
We hope people will be inspired by her compassion to take a stand against cruelty by refusing to support these callous industries.
Broadcaster Eamonn Holmes said his interviews with the singer had "always been a privilege and a pleasure", adding: "You are, without doubt, a living legend".
"It is an unprecedented honour to have my birthday marked in such a handsome way and I am truly thrilled by this wonderful gesture", the British singer said in a statement.
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The star, whose recordings and performances for troops made her hugely popular during the Second World War, is also the oldest artist to have a number one album - a compilation of her biggest hits topped the charts in 2009.
Tributes for her birthday have started to pour in.
The 350ft image also celebrates the release of Dame Vera's new album, "Vera Lynn 100" on Friday featuring new re-orchestrated versions of her most beloved music alongside her original vocals.
Dame Vera has been celebrated for her charitable work throughout her lifetime, working with ex-servicemen, disabled children and breast cancer charities.
Television judge Robert Rinder thanked the centenarian for her efforts during the war.
"I wonder if she ever heard me on the radio after that".