She was last seen in the area of Warwick Road, Carlisle yesterday (June 7) at 6:30pm.
Chantelle is described as wearing black leggings, a black top and gold trainers. Chantelle is 5ft 4ins, slim and has shoulder-length Black hair.
Officers would also like to urge Chantelle to contact this number if she sees this appeal.
Anyone with information should contact police on 101.