 After graduating from De La Salle University, she became one of the leading presenters in Philippine television journal programmes.She first gained fame by being one of the original anchors of ABS-CBN's flagship newscast TV Patrol from 1987 to 1995.Currently, Tiangco co-anchors GMA Network's evening newscast, "24 Oras" with Mike Enriquez and since 2014 Vicky Morales.