Chloe, 18, is believed to be with her one-year-old daughter she went missing from Crawley on Thursday (November 10).
She is described as 5’7” and slim, with long red/burgundy hair. She is wearing black leggings, a black top and black and burgundy trainers.
Her daughter has blonde hair and is understood to be wearing a pink fleecy zip-up cardigan and is in a black iCandy push chair.
The pair were last known to be in Worthing.
If you see them or have any information that could help, please call 999 immediately, quoting serial 477 of 10/11.