Mia Ramsay was last seen in the Restalrig area of Edinburgh around 3 am on Friday.
She has been described as 5ft 8in tall with long blonde hair and green eyes and was last seen wearing a white coloured sheepskin jacket with a fur collar.
Police are growing increasingly concerned for the welfare and safety
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Inspector William Falconer, of Craigmillar Police Station, said: “Anyone with information which could assist should call 101 and quote incident 0275 of 8th April”