Neighbours shares first look at Mischa Barton’s debut as the mysterious character Reece on iconic soap as her X-rated storyline with actor Xavier Molyneux kicks off

Neighbors shares the first look at Mischa Barton’s debut as mysterious character Reece in the iconic soap as her X-rated storyline with actor Xavier Molyneux kicks off

Mischa Barton has kicked off her raunchy storyline on Neighbors as she makes her debut as the mysterious American character named Reece Sinclair.

The OC star, 37, has filmed a number of X-rated scenes with co-star Xavier Molyneux as she takes part in the highly anticipated Amazon Prime reboot of the Australian soap.

And Channel Ten has shared a first look at the British-born American’s debut in the long-running series in which she seduces Xavier’s (26) character Byron Stone.

The footage was posted to Instagram last Friday and shows Reece trying to get help with her bags as she checks into Paul Robinson’s Lassiters Hotel.

After being turned away by the receptionist who was having trouble getting her computer to work, Paul ordered Byron, Jane Harris’ son, to help Reece.

At the end of the clip, we see Reece getting into the elevator with the handsome hotel employee, who moonlights as a male escort, and it looks like things are about to get steamy.

A new trailer released last month teased Reece’s real identity, as her secrets appear to be revealed after her arrival.

She and Byron share an intimate hug in the elevator during their first meeting and she soon begins to stir up drama in Erinsborough as they begin a romance.

Mischa Barton, 37, (pictured) has kicked off her raunchy storyline on Neighbors as she makes her debut as mysterious American character called Reece Sinclair

The OC star has filmed a number of X-rated scenes with co-star Xavier Molyneux, 26, (pictured) as she takes part in the highly anticipated Amazon Prime reboot of the Australian soap

The OC star has filmed a number of X-rated scenes with co-star Xavier Molyneux, 26, (pictured) as she takes part in the highly anticipated Amazon Prime reboot of the Australian soap

At one point he tells her, “I really want to know more about you,” before they grow closer during a beach date.

However, their romance does not go smoothly when Byron accuses the mysterious newcomer of ‘keeping secrets’.

Byron teases her cryptic identity and then angrily asks her, “Why didn’t you tell me who you are?” while holding up a sheet of paper.

And Channel Ten has shared a first look at the British-born American's debut in the long-running series as she seduces Xavier's character Byron Stone

And Channel Ten has shared a first look at the British-born American’s debut in the long-running series as she seduces Xavier’s character Byron Stone

The reboot of the long-running soap opera, which returns in September, is set two years after the events of last year’s season finale.

The new chapter of the hit Australian drama launches on Monday, September 25 on Prime Video Australia and New Zealand.

In Australia, Network 10 will retain first-run rights to the series, and episodes will be available ad-free on Prime Video seven days later.

Internationally, Neighbors will be available on Amazon Freevee in the UK and US, and Prime Video in Canada, Ireland and South Africa.

A new trailer released last month teased Reece's real identity as her secrets appear to be revealed after her arrival

A new trailer released last month teased Reece’s real identity as her secrets appear to be revealed after her arrival