The stunning former TOWIE star, 23, lashed out at the 'ridiculous' reports this weekend (Friday 30 January).
The usually good-natured star lost her temper after reading untrue stories about herself and took to Twitter to put things right.
She said: "I can confirm I have had NO surgery on my face or body! Keep reading ridiculous articles claiming I have had Botox, lip fillers etc rubbish!"
Fans quickly responded with messages of support, with one saying: "No1 can believe you're that perfect without work #jealous."
Another replied: "That's a really good message for younger people who immediately jump to cosmetic surgery where it's not needed."
One fan didn't seem bothered either way, writing: "Whether you have or not it really doesn't matter. You're still pretty. Don't even sweat."
I can confirm I have had NO surgery on my face or body! Keep reading ridiculous articles claiming I have had Botox, lip fillers etc rubbish!— Lucy Mecklenburgh (@lucy_meck) January 30, 2015
Since leaving the cast of TOWIE in 2013, Lucy has taken pride in launching her own online fitness business Results With Lucy and has recently released a new book Be Body Beautiful, containing Lucy's six-week diet and fitness plan.
She's also landed a fitness advice slot on The Cosmo Body Show.
So it's hardly surprising that the Tumble star is keen to promote a more natural way of looking good, rather than surgery.
Lucy, who is dating Olympic hunk Louis Smith, has previously spoken out against surgery companies who offer celebrities treatments for free.
Talking about the amount of fellow celebs who have had work done, she said: "I find it quite upsetting, especially the quick weight-loss surgeries. If you just went to the gym three times a week and ate a bit better and drank a bit more water then you could do that naturally.
"I'm sticking to my guns that at [my age] you don't need Botox and things like that. It's frightening to me just how common plastic surgery is. It's almost like going to get your nails done."
No wonder the stunning Lucy recently won Reveal's online poll to find out which Essex star has the best bikini body!
Are you for or against surgery? Tell us in the comment box below and you could win £50!
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