Isabelle was last seen at a Huth Street, Labrador address on Thursday, September 5, 2013.
Police hold concerns for her welfare as she hasn’t been in contact with family or friends since.
Isabelle is described as being approximately 183cms with a slim build, fair skin and short brown hair.
Anyone with information which could assist with this matter should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.
Crime Stoppers is a registered charity and community volunteer organisation working in partnership with the Queensland Police Service.
For all non-urgent police reporting or general police inquiries contact Policelink on 131 444 or www.Policelink.qld.gov.au 24hrs a day.