In the first viewer-voted Bushtucker Trial of the series, Jorgie Porter and Lady Colin Campbell will take on an eating trial with 'Disaster Chef'.
The two ladies were chosen from the cast of 10, which also includes Tony Hadley, Yvette Fielding, Duncan Bannatyne, Chris Eubank, Brian Friedman, Kieron Dyer, George Shelley and Susannah Constantine.
This year, fans will be able to vote for who takes part in the trials for free via the I'm A Celebrity app.
Meanwhile, it's also been confirmed that reality television stars Spencer Matthews, Vicky Pattinson and Ferne McCann will join the group later this week, bringing the total cast to 13.
According to the Mirror, an ITV source explained: "The original line-up had a bit of everything but there were not many youngsters and these extra stars guarantee more young viewers - as well as increasing the prospect of flirting and fighting in camp.
"Spencer is a ladies' man who will try to charm every female in camp. Throw in two more single girls alongside George Shelley and Jorgie Porter and you have a melting pot of young people looking for love."
Though all three newcomers are single, the likelihood of Vicky and Spencer getting romantic is slim, with Vicky last week saying: "I read that Spencer might go in but I don't fancy him at all. He's slimy and posh."
The TOWIE, Geordie Shore and Made in Chelsea castmates will make their first appearance on the show on Wednesday, November 18.
I'm A Celebrity... Get Me Out Of Here! continues nightly on ITV.
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