A FORMER Beauty and the Geek star has been charged with the murder and decapitation of her boyfriend — as police are in a desperate search for his missing head.

Julian Story, 39, was reportedly found burnt and dismembered on the bathroom floor of an apartment in Port Lincoln, southern Australia.

Officers made the grim discovery last Tuesday after responding to reports of a small fire.

His girlfriend, Tamika Sueann-Rose Chesser, 34 — a model and reality TV star — was arrested two days later under the Mental Health Act and charged with murder.

Detectives have made an urgent public appeal to help find Mr Story’s missing head, which was allegedly removed following his killing around midnight on June 17.

Detective Superintendent Darren Fielke told reporters on Friday: “While I won’t provide any further detail about that at this time, I can tragically say that we have not recovered the head of Julian Story.

“I can only imagine, and I want you to imagine, the grief this news is causing Julian’s family.

“Recovering Julian’s head to return it to his family so they can have a peaceful outcome, have a funeral and lay him to rest is a really important aspect for us.”

Police have circulated CCTV footage and stills of a woman alleged to be Ms Chesser strolling through Port Lincoln hours after the alleged murder.

The woman was seen with three dogs — dressed head-to-toe in black with a head covering, cops said.

Officers hope locals might spot something that could lead them to the missing remains.

“I’m appealing to local residents to review CCTV or dash cam footage which they may have, which may assist the investigation,” Supt Fielke said.

Court documents reveal officers found Ms Chesser sitting in the back garden of the property “in a catatonic and unresponsive state” before arresting her.

She’s also been charged with disposing of human remains to pervert the course of justice and assaulting a police officer, The Telegraph reports.

So far, police say there’s no obvious motive, with Assistant Commissioner Ian Parrott admitting there were still “a lot of unanswered questions” in what he described as a complex crime scene.

In court on Friday, a suppression order protecting Ms Chesser’s identity and banning publication of the alleged circumstances of Mr Story’s death was lifted.

The ex-reality star, who appeared via video link, has been denied bail and remains under a mental health detention order ahead of a committal hearing set for December.

Ms Chesser’s sister, Kiya-May, claimed her family is shattered by reports she’d been charged with murder.

They told Daily Mail Australia: “Please report how my sister is in a mental psychosis… This is not her… She would never do these things.”

She added her sister had suffered “a life of trauma and abuse, and now this – it has fried her brain”.

Meanwhile, Mr Story’s grieving family has thanked police, emergency workers and the community for their support during what they called an “unimaginable loss,”.

“Your care has brought comfort amid the chaos,” they said.

Neighbours have also recalled how they tried to tackle the blaze, unaware of the horror inside.

Local resident Jody Miller told 7News: “It’s devastating. This doesn’t happen in a small town like Port Lincoln.”

He added he’d seen the couple before, saying: “She seemed normal, she was good.”

It comes as eerie footage emerged of a woman believed to be Ms Chesser reportedly standing topless at the Port Lincoln war memorial wearing a wedding veil, just days before her arrest.

The bizarre clip showed the woman silent and motionless at the Garden of Remembrance while holding what appeared to be a sharp object — an unsettling stunt filmed by a horrified bystander.