In the past few months she's posed naked in a bathtub, she's shared a nude selfie in bed while eating Macca's, and shared a topless selfie taken in a steamed-up mirror.
But her latest nude has sent tongues wagging because of itscheeky caption – leading many fans to believe the former MAFS contestant had launched an X-rated side-hustle.
Kalifatidis shared a topless snap taken in her bathroom mirror on Sunday, using one hand to protect her modesty.
At first glance it doesn't seem that strange: but the phrase is commonly used among those who use Instagram to promote their Only Fans account – a subscription service famed for people selling pornography.
As a result, Kalifatidis' 352,000 followers officially lost it, believing she had joined Only Fans as a way to make extra cash like so many other former reality stars.
"OMG, have you got an Only Fans account?" one user asked.
Most however just streamed the raunchy picture with compliments, telling Kalifatidis she looked "amazing".
"Such a confident woman, love this," one wrote.
"Martha you a wonderful person. Please don't change," another said.
Kalifatidis caused a stir this month over a $205 floral bikini. She undoubtedly looks a million bucks in the two-piece swimmers, but many of her followers were more interested in the fact she was sharing her "real" body – stretch marks and all.
"Thank you for not photoshopping stretch marks. Great to see on my feed as a female teenager," one follower wrote.
"You're an inspiration for sharing your unfiltered photos with us," another said.
A few weeks earlier she caused a stir over a nude snap taken in a bath that later turned out to be a promo shot for a new Sand & Sky beauty product.
She's no stranger to posing nude. Picture: Instagram/MarthaKalifatidis
The next-level snap caused a frenzy for the items, with a spokesperson for the brand telling news.com.au's The Beauty Diary more than 5000 units were sold in the first 24 hours alone on Tuesday – which equates to one jar every 15 seconds.
"Martha's photo was the perfect way to kick off our launch campaign and draw natural attention to our hero ingredient of Tasmanian Spring Water," Sarah Hamilton said.
