The monarch will celebrate her landmark birthday at an event taking place in the grounds of Windsor Castle, which will also be televised on British television channel ITV, on 15 May (16).

The event will see a host of names from the worlds of music, movies and television join together to honour England's longest living monarch.

Helen, who won an Oscar for playing the monarch in 2006 movie The Queen, is set to participate in the celebrations, alongside Star Wars actor John Boyega, Homeland star Damian Lewis and Downton Abbey actor Jim Carter.

Musical performances will come from Kylie Minogue, Katherine Jenkins, Andrea Bocelli, Alfie Boe and British pop stars Jess Glynne and Beverley Knight.

Actors Imelda Staunton, Martin Clunes, Jennifer Saunders and television veteran Alan Titchmarsh will also help celebrate Queen Elizabeth's big day at the event, which will be hosted by British presenting duo Ant and Dec.

The pair said in a statement: "We are honoured to be hosting this special celebration of Her Majesty the Queen's 90th birthday.

"This spectacular evening will bring together some of the best known names in the entertainment world who will perform with 900 horses and 1,500 participants to mark this very special birthday."

The event will tell the story of the Queen's life, from her 1926 birth through a reign which has spanned more than 60 years.

Other performers at the celebrate will include The Oman Royal Cavalry, Huaso Dancers from Chile, The New Zealand Army Band, The Royal Canadian Mounted Police, Azerbaijani Dancers and Djigitovka Horses and Riders, State Carriages from The Royal Mews, The South Australian Police Band, The King's Troop Royal Horse Artillery, The Fijian Armed Forces Band and Dancers, 100 Military and Commonwealth Pipers and The Household Cavalry Mounted Regiment.