The TV presenter stripped down to her bra to catch some rays in the sweltering jungle heat and had us marvelling at that six-pack of hers.
The 44-year-old mum-of-two also made a bit of an admission during a chat with fellow campmate Jake Quickenden after he got a telling off for taking a pee in the bushes.
Melanie flashes her abs
The former 'X Factor' hopeful was given an official warning about urinating within the camp as it can attract wildlife and snakes.
Apologising to the group, he said: "I was washing my clothes so I went round the corner and had a wee because I was desperate, when a guy’s got to go, he has to go.
"I wee in my garden and my mum wonders why all the plants are dead."
Not that Mel was worried, who told him: "If I had a willy I’d probably do it."
Then, after former footballer Jimmy Bullard admitted he had peed in the pool, Mel told the Bush Telegraph: "Maybe we did a little one in the pool but we might have just been joking."