She is described as being 5ft 6in tall, of slim build and was last seen wearing white jeans, a blue and white top and a white baseball cap.
Police are appealing to members of the public to help trace a teenage girl who has gone missing from Stevenage.
Zara also has connections to Biggleswade and Letchworth.
Anyone who sees Zara or knows of her whereabouts is asked to contact Hertfordshire Constabulary via the non-emergency number 101.
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