Happy 89th Birthday to the Queen

Happy birthday #QueenElizabeth! http://t.co/qIFuJAjdTX pic.twitter.com/zNz37NIRXQ

— VOGUE.CO.UK (@BritishVogue) April 21, 2015

President Reagan and #QueenElizabeth horseback riding at Buckingham Palace, 1983. #queensbirthday pic.twitter.com/BuxXNdd3Af

— US National Archives (@USNatArchives) April 21, 2015

#QueenElizabeth becomes the first Briton to make a long-distance phone call without the help of an operator, 1958 pic.twitter.com/sAu0hreqLU

— Tim Stanley (@timothy_stanley) April 21, 2015

#QueenElizabeth II celebrates her 89th birthday privately at Windsor Castle http://t.co/63VVyvsJpZ pic.twitter.com/6b1giiUnxy

— IBTimes UK (@IBTimesUK) April 21, 2015

It's #QueenElizabeth's birthday, here's a glimpse into her day: pic.twitter.com/kAWTxaCcVk

— BuzzFeed UK (@BuzzFeedUK) April 21, 2015