"Unless you looks like Bella-f%*king-Hadid, then you shouldn't be commenting on other people."
Kalifatidis recently revealed that she gained weight while on indulgent holidays with her boyfriend Michael Brunelli.
After having an obsession with calorie counting, she said she has finally learnt to accept her "voluptuous" body.
"The advice I'd give my [younger] self is the quicker you can accept the body you've been given, the more you'll have with it," she added.
Kalifatidis also mentioned that she wouldn't change anything about her body (apart from a tweak to her breasts) and that she would be proudly wearing a tiny bikini all summer.