Porter also claimed that rehearsals for the reality show had given her the first lines of a six pack on her stomach, but added that "cheese fondue over Christmas" had got rid of them.
Watch Digital Spy's interview with Jorgie Porter below:
Joking about her new figure, the soap star said: "My bum's got a little bit bigger. It just clenches on its own. I'm stood there and then 'Oom! What's that?' My bum just clenches."
Porter, who plays Theresa McQueen in Hollyoaks, has been described as a "daredevil on ice" by producers and her rivals and has already vowed to take on the headbanger lift and "even more dangerous skating" moves.
Dancing on Ice launches on Sunday (January 8) at 6.30pm on ITV1.
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