With heavy hearts, we announce the passing.

Sienna’s sudden passing has deeply affected her loved ones and fans, who have expressed their grief on social media. Her boyfriend, Tom Bull, shared a poignant message: “We loved with a love that was more than love.” Her final Instagram post, a mirror selfie taken in April, has since become a memorial space filled with tributes.

Described by those who knew her as someone who could “light up every room” with her smile and presence, Sienna was not only a beauty queen but also a successful student, having studied English literature and psychology at Sydney University. Her death is a somber reminder of the fragility of life, leaving a legacy of a life full of potential tragically unfulfilled.