Hayley Mary grew up in Byron Bay where she went to school with Heather Shannon, with whom she would later form The Jezabels.

The two relocated to Sydney to attend University, where they met Nik Kaloper and Sam Lockwood, and formed the band in 2007.

[1] The Jezabels were formed in 2007 when the four members met as students at the University of Sydney and over the next years released three EPs and three studio albums, all of which peaked within the ARIA top 5 and three extended plays.

[8] In July 2024, Mary announced the release of her debut studio album Roman XS.

The album is preceded by the singles "One Last Drag", "The Ballad of Ruby Wednesday" and "The Lonely One".