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Sharon Osbourne is not impressed with Netflix show Making A Murderer star Steven Avery's engagement.

The convicted murderer, who is currently serving a life sentence without parole for the murder of Teresa Halbach, announced his engagement to Lynn Hartman after meeting his fiancee in person just one week age.

Sharon pretended to vomit while the details of the happy couple's engagement began to be discussed.

“They are murder groupies!” Sharon declared.

“Innocent, guilty, whatever. He still looks like a gnome,” Sharon said. “Who wants to marry a gnome?”

(Image: CBS) (Image: CBS)

While her co-host Sheryl Underwood said: “You've got to be a big criminal to make me want to marry you while you're still incarcerated”.

As Sara Gilbert admitted her first thoughts about the engagement were: “What, no luck on match.com?”

(Image: CBS)

On Friday, it was revealed that Avery popped the question to legal secretary Lynn Hartman after speaking to her over the phone and sending her letters for eight months before they finally met up in person.

According to reports, she visited him in the Waupun Correctional Institute, in Wisconsin, and she's already getting accused online of dating him for the potential fame and fortune.

(Image: Facebook.com/averydasseyproject)

Avery has been married once before and engaged twice, but he insists this time is forever as he gave an interview over the phone from prison.

"She's going to be my future wife, we’ll be laughing forever," he told Mail Online.

"I'm happy, she treats me decent, she loves me, she's kind of spoiling me right now. I just want to be happy and enjoy my life, I think I did enough time."

The 53-year-old, along with his nephew Brendan Dassey , was found guilty in 2005 for killing photographer Teresa Halbach.

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(Image: Netflix)

Dassey, 26, is set to be released after having his conviction quashed recently, following the success of the Netflix.

Avery added: "I'm happy, she treats me decent, she loves me, she's kind of spoiling me right now. I just want to be happy and enjoy my life, I think I did enough time."

But his former fiancée, Sandra Greenman, who has visited him in prison for more than 10 years is not happy with the news.

"She's very pretty, there's no way she'd want Steven Avery usually," she told Mail Online.

"All the family are afraid of her, something isn't right, I know she wants fame, and she's looking for money."