Queen of style: her most iconic outfits

As the Queen celebrates her 90th birthday, a look back at the fashionable monarch's most memorable outfits, pictured here at a garden party on the grounds of the Royal Hospital, Chelsea, London

With sister Margaret and dressed almost identically, the 21-year-old Elizabeth was already setting trends in a box-pleat dress cinched with a bow showing off her tiny waist, white gloves, neat handbag and coordinated peep-toe slingbacks showed a keen eye for detail

A rare glimpse of bare arms and above-the-knee dress in an all-white outfit by royal couturier Norman Hartnell. Worn on tour in Mauritius in 1972, yellow flowers on her hat were a nod to her sunny surroundings

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