The pint-sized reality star posted a photo to her Instagram account yesterday (12 June) which sees the 25-year-old showing off her muscle strength while sporting a 'Gymaholic' vest top.
Snooki - real name Nicole Polizzi - simply captioned the snap: "'Too skinny' my ass. #FIT."
Snooki, who is mum to nine-month old baby Lorenzo, showcased her trim figure in March after a 42-pound weight loss which she achieved through a controlled diet, breastfeeding and cutting out alcohol.
But while Snooki received praise for her new look from the likes of American rapper Nicki Minaj, it appears that some online critics have blasted her as 'skinny'.
Snooki later tweeted: "People always say "your not the same Snooki." As sure as hell hope not. People change, they mature & GROW up. It was time & I'm better than ever."