In an age fascinated by youth, it's especially notable that the Queen, at 90, is still so very much admired. Her contribution to public life is inimitable, and she is loved both at home and abroad.
She can also count on some surprising celebrity superfans. Even Hollywood actors such as Helen Mirren, Uma Thurman and Daniel Craig admit to being bowled over by her star quality. To a new generation such as President Obama's daughters and the Jolie-Pitt children, she is someone to whom they can truly look up.
The world's most famous great-grandmother is respected because, while she has adapted to modern times, her core values of kindness, strength and service have remained unchanged.
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