Holly, 24, was one of the original cast members to join the MTV show back in 2011 and she has since slimmed down dramatically after ditching junk food and cutting back on booze.
The star, who is rumoured to have quit Geordie Shore earlier this month, has even penned her own book, The 12 Week Body Bible, to share her weight loss experience and tips with fans.
However, Holly has recently received some comments which she has found surprising. One included: "You looked bigger better!" Another even told her to "put on weight again".
Hitting back, Holly has shared a before and after picture of herself on Instagram. The first snap shows her aged 18 and squeezed into a black mini dress, while the second is of Holly now, looking trim and toned in a white bra and knickers.
She captioned the shot: "I've always been baffled when people say, 'You looked better before' I think NOT."
Holly added: "Both my body fat and BMI are much lower than they were 5 years ago and I can actually exercise without thinking I might die!
"My weight loss has been gradual and, like any girl, I get bigger and smaller. But everything I've learned is from my own experience, including my diet plan, which is all in my 12 Week Body Bible diet book."
Although Holly hasn't addressed them herself, rumours have been swirling that she has quit Geordie Shore. A source told The Sun: "Holly formally told producers she was off earlier this month. She's got her own projects to follow and there's a while new cast that's come in and she's feeling that it's really time to move on."
They added: "Charlotte quitting earlier this year prompted her to do something that she'd been thinking about for a while. Producers have asked her to reconsider, but so far, she's stuck to her guns."
Despite not confirming or denying the whispers, has hinted she may not be returning for series fourteen of Geordie Shore.
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