Sienna Cammeniti is a fictional character from the Australian soap opera Neighbours, played by model Erin McNaught.

In November 2007, it was announced that model and former Australian Miss Universe representative, Erin McNaught would be joining the cast of Neighbours to help boost falling ratings in Australia.

[1] Producers also recruited fellow model Imogen Bailey (Nicola West) and former Australian Idol contestant Dean Geyer (Ty Harper) in a bid to "sex up" the cast.

[2][3] McNaught took acting classes in preparation for the role of Sienna and she began filming her first scenes on 17 December.

[5] In July 2008, it was announced that McNaught had opted to relinquish her role as Sienna, for the benefit of her relationship with Braith Anasta and because she was homesick.

[6][7] On her departure McNaught said "It was a great experience and I'm really happy with what I have been achieving in acting – so it was a tough decision to make.

"[8] Network Ten describe Sienna as being "one of a seemingly endless array of Cammeniti cousins", she is attractive and passionate, but can occasionally be misguided.

"[9] Sienna leaves her job as a nurse in the countryside and moves to Erinsborough due to problems at home.

Sienna meets Carmella's partner Marco Silvani (Jesse Rosenfeld) and Lou Carpenter (Tom Oliver).

Sienna sings reasonably well and Ty's bandmate, Logan Ellis (Nick Cain), falls for her and she is hired.

Sienna's cousin, Rosetta (Natalie Saleeba) has a baby and sends Carmella tickets to fly out to Italy for a visit.

[10] Chief of Brisbane acting agency Ego Management, Mark Eaton said that the shows producers were "simply hunting for eye-candy when they hired Erin and fellow lad mags' favourite Imogen Bailey".