Today,9/9/15, Queen Elizabeth II officially becomes the longest reigning monarch in British history! #GodSaveTheQueenpic.twitter.com/YMneoqPglY
— British Royals (@britishroyals) 8. September 2015She has been Queen for 63 years, 7 months, 2 days
She has been Queen for 63 years, 7 months, 2 days