EMERGENCY services were called to the Princes Highway at Bulli Tops, following reports a car had hit a tree on Saturday about 3.10pm.
The driver and only occupant of the vehicle, a woman believed to be aged in her 20s, died at the scene.
No one else was injured during the incident.
Wollongong police are investigating the circumstances leading up to the incident.
Any witnesses who have not yet spoken to police are urged to come forward and contact Crime Stoppers.
A report will be prepared for the Coroner.