Police are growing concerned for the welfare of Louise Marchant.
Louise, 15, was last seen in the Three Bridges area of Crawley around 9.30pm on Tuesday (May 14).
The Brighton teenager is white, 5ft 2in, of large build, with long blonde hair often worn up and she wears glasses. It is unknown what Louise was wearing when she went missing but she would normally wear a hooded top, leggings and trainers.
Louise has links to Brighton, Crawley and Hastings.
If you see Louise or have information on where she could be please report online or call 101 quoting 15 of 15/05.