Tiddas were Sally Dastey, Amy Saunders and Lou Bennett, a three girl folk band from Victoria, Australia. They have been nominated six times for an ARIA Music Awards, and their 1994 album Sing About Life was awarded the "Best Indigenous Release". [From Wikipedia]
These are photos from concerts where Tiddas played, so they may be of other bands that played the concert as well.
Push Over Festival Nov 20, 1993 Melbourne, Victoria, Australia Uploaded by Mike G Force
World in the Park Aug 8, 1993 Bath, England, United Kingdom Uploaded by Brian Lr