Erin was born in Cairns, Far North Queensland to parents Trish and Mark Holland. Her love of music began from 3 years old, when her father taught her how to play the recorder. Since this early introduction, she trained as a classical, musical theatre and jazz singer, played the Clarinet and Saxophone and studied musical theory, with the dream of one day starring as a leading lady on Broadway. Erin trained in Jazz and Tap dancing from 4 years old, receiving honours in Advanced R.A.D Examinations. Throughout her schooling, she performed in Orchestras, Big Bands, Choirs, Wind Ensembles and many Musicals. Amateur theatre credits included lead roles in Anything Goes (Reno Sweeney), Beauty and the Beast (Belle), Annie (Lily) and Fame (Carmen). Upon graduating from Cairns State High School in 2006, Erin moved to Sydney to pursue her dreams, to study on scholarship at the Sydney Conservatorium of Music.

Holland is a classically trained soprano singer holding a Bachelor of Classical Voice degree from the Sydney Conservatorium of Music. She received a scholarship after graduating from Cairns State High School in 2006. Erin also received a Music Scholarship from The Women’s College, University of Sydney, where she lived throughout the 4 years of her bachelor’s degree.

Holland beat 32 finalists to be crowned Miss World Australia on 20 July 2013. For the talent component of the competition Holland sang Cabaret’s “Maybe This Time”, receiving 1st place, and Miss World Australia Talent . She went on to represent Australia in the Miss World International competition in Bali, Indonesia. She credits her success to her wonderful family and friends, and the Miss World Australia organisation.

Holland was awarded the Miss World Continental Queen of Beauty, Oceania on 28 September 2013, placing in the Top 10 of the overall competition out of 130 countries. For the talent component of the competition, she performed “Someone Like You” from the musical Jekyll & Hyde where she received 1st Runner-up, Erin also placed 1st Runner-up in the coveted Beauty With A Purpose philanthropy component and 8th in Interview.