She was arguably the most famous woman of her time, and Queen Elizabeth II's style - though restrained and often conservative - was instantly recognisable.
Just as she remained a constant presence during her 70 years on the throne, so did the show-stopping hats and bright coats of her public appearances, and the tweeds, tartans and headscarves of her off-duty look.
Her outfits were meticulously designed - both with practicality in mind, and often with subliminal messages of soft power, diplomacy and stability.
A new exhibition at The King's Gallery in Buckingham Palace - showcasing items from the 10 decades of Queen Elizabeth's life and marking the centenary of her birth - throws light on how Britain changed during her reign.
Of the 200 pieces set to be featured - including clothing, jewellery, hats, shoes and accessories - we have selected five of the most iconic outfits.
