Higgins, 21, picked up the Breakthrough Award, Song of the Year for SCAR and shared the Writing trophy with KEVIN GRIFFIN - who co-wrote Scar - at the star-studded ceremony in Sydney's Four Seasons Hotel.
Melbourne foursome Jet were named Songwriters Of The Year and recognised for their international success with Most Performed Australian Work Overseas for ARE YOU GONNA BE MY GIRL.
Unable to attend the ceremony in person, frontman NIC CESTER said in a pre-recorded message, "This is a real honour to receive this award. There have been so many people who have helped make this album pretty successful. We've had fun over the past two years."
The full list of winners are:
Song of the Year: MISSY HIGGINS for SCAR
Writers: MISSY HIGGINS and KEVIN GRIFFIN
Songwriter Of The Year: JET
Breakthrough Award: MISSY HIGGINS
Ted Albert Award For Outstanding Services To Australian Music: MICHAEL CHUGG
Most Performed Australian Work: Pete Murray for SO BEAUTIFUL
Most Performed Foreign Work: 3 DOORS DOWN for HERE WITHOUT YOU
Most Performed Country Work: KASEY CHAMBERS for LIKE A RIVER
Most Performed Dance Work: Daniel Merriweather for CITY RULES
Most Performed Australian Work Overseas: JET for ARE YOU GONNA BE MY GIRL
Most Performed Jazz Work: THE NECKS for Drive By.01/06/2005 09:17