This portrait of Queen Elizabeth II by the renowned British photographer David Bailey CBE is released on April 20, 2014 to mark her majjesty's 88th birthday on Monday April 21. The photograph was taken at Buckingham Palace in March and was commissioned on behalf of the British Government's GREAT Britain campaign. The image will be used in activity to support the GREAT campaign, which aims to generate jobs and growth through highlighting internationally Britain as a world-class destination for trade, tourism, investment and education.

请问女王的生日是法定国庆日吗？

英女王，晚安