The Birds of a Feather actress became the first celebrity to arrive in the Australian jungle yesterday (November 5), ahead of the new series this weekend.
Referring to former I'm a Celebrity star Myleene Klass's moments under the waterfall, she told The Sun: "It's a lovely white one [bikini]. I'm going to be just like Myleene!"
> Katie Price, Mark Wright, Myleene Klass: I'm a Celebrity's best waterfalls
Robson also revealed that she has undergone hypnotherapy to get over her fear of rats.
"I'm not in the least bit bothered about bugs and creepy-crawlies - but I used to be petrified of rats. Thankfully, I've been hypnotised, so I'll be fine in there," she said.
"I've been asked to do the show many times before - but I've always said no. The rat phobia stopped me doing it."
EastEnders actress Charlie Brooks and boxer David Haye are among the celebrities rumoured to be taking part in this year's run.
Ant & Dec will once again host the ITV reality series, which has previously been won by stars such as McFly's Dougie Poynter, Kerry Katona, Joe Pasquale, Joe Swash and Matt Willis.
I'm a Celebrity... Get Me Out of Here! launches on Sunday (November 11) at 9pm on ITV1.
In pictures - rumoured I'm a Celebrity contestants: