"Seriously you're to [sic] skinny. Eat something 🤮🤮🤮🤮🤮🤮" one fan commented under a snap she shared of herself posing in underwear on Tuesday.
"And I ain’t being rude as I do admire her and her strength but it’s worrying," another said of her extreme weight loss.
Another concerned follower added: "Wow I love you but you don’t look healthy."
Lizzie's latest post comes after fans spoke out about her weight loss after she posted another shocking selfie on February 14.
"Way toooo thin now," one person wrote under the photo of the reality star.
"You so thin!" another said.
"Are you well? a concerned fan asked.
Elizabeth has shed a whopping 10kg since first appearing on the show.
"I've thought that when I weighed 49kg and when I've weighed 90kg. I want women to realise that we're all so much more than a number on a scale," she revealed.
"So, yes, I've lost some weight since I was a 'huge' size 10 when I was on MAFS, but that doesn't mean I'm any 'better' now, just because I'm slimmer."
However Elizabeth maintains that her drastic weight loss is the result of illness not dieting.
Speaking previously to an Australian magazine, the MAFS star said she had lost weight because of an auto-immune condition similar to lupus.