The politician was a late arrival to the Australian camp - beginning her journey after the other contestants had already arrived - but has revealed she shed a stone of weight while there.
Edwina told the spinoff show's Laura Whitmore: "I'm smaller than when I went in. I genuinely wasn't hungry when I was in there, when I was sharing stuff, because I'd had enough. But it's because I took in two and a half stone of extra supplies and I left a stone behind. In two weeks."
She isn't the only contestant to have lost weight: presenter Mel Sykes has also revealed she shed a stone of weight due to the basic jungle rations of rice and beans.
The 68-year-old was the seventh star to be eliminated from the show.
She was asked by Laura whether jungle bust ups were a result of just having fun or genuine difference in personalities.
"It was a mixture to be honest," replied Edwina. "Part of it is fun, part of it is teasing people, keeping people amused and happy. You are all living together, you're strangers. I didn't know anything about the history of some of the people there, and sometimes you'll make a remark that grates."
Viewers will know Edwina had a frosty relationship at times with fellow campmate Kendra Wilkinson but, on Edwina's part, it's water under the bridge, as she told Kendra during the interview she was "lovely."
The I'm A Celeb stars will gather tonight for the Coming Out show, which airs 8pm on ITV.