The 'TOWIE' star joins a long line of famous names including Eva Mendes, Pamela Anderson, Helen Flanagan and fellow Essex dewllers Rylan Clark, Chantelle Houghton and Lauren Goodger who have all got their kit off to help raise awareness of animal cruelty.
In the ad, which she unveiled today in London's Piccadilly Circus, Gemma can be seen lounging on satin sheets wearing nothing but a smile and faux pearls.
Speaking about her decision to strip off for the 'I'd rather go naked than wear fur' campaign, Gemma said: "Like PETA, I believe that beauty comes in all shapes and sizes.
"You don't have to be a size 8 to feel beautiful, but you do have to be comfortable in your own skin. And that means letting animals keep theirs – not killing them for their fur."
Gemma's not the first celeb to strip naked for PETA...