Not seen was her new man - notorious British former doctor Andrew Wakefield.
"What's wrong with her feet?" asked one comment, prompting the reply: "maybe bone spurs? I assume wearing high heels for years can't be too easy on the feet."
"Probably shoe problems," wrote another Instagram commenter, whereas yet another user of the social network merely posted several feet emoji.
"Those popcicle toes though!!!" wrote one commenter, adding a trio of laughing emoji, while another wrote: "Skinny weird feet".
The negative reaction to her feet spanned multiple languages, with one Instagram user writing incredulously: "C est quoi ces pieds ????"
This is not to say that Elle was without her defenders, however, as many Instagram users sprang into action to take the Australian model's side.
"Years of heels and catwalks. Leave her alone. This woman paved a path!!!!!!!" wrote one Instagram commenter amid all the trolling.
"The funny thing is, all this sniping, yet there are literally millions of men who'd eat their own pinky off just to have five minutes of quality time with the feet of Elle Macpherson," wrote another, popping in a smiling emoji before: "#imoneofthem".
"If ya don't like her feet, there lots of other things to LOVE about her!!" piped up another Instagram user, buttoning the statement with a flamenco dancer emoji.