The Girls Aloud singer told The Sun that this evening's performance is very sexually driven.
After being lowered from the ceiling in a silver hoop, Walsh will dance a salsa routine with partner Pasha Kovalev to 'Naughty Girl'.
However, Walsh said she needs to find inspiration from Beyoncé's alter ego 'Sasha Fierce', as she would find it "too inhibiting" to be herself.
She explained: "This entrance is definitely something Beyoncé's alter ego Sasha Fierce would do.
"She'd probably be doing forward rolls up there on the hoop. I've also got a couple of risqué lifts which, if they work, will look amazing.
"But my Sasha Fierce definitely needs to kick in because I can't perform a song like this as me. It would be too inhibiting - I'd be so aware of myself.
"I'll probably just try to pretend I am Beyoncé. And she would definitely not be frightened of this routine, so I'm just going to go for it.
"It's not the kind of thing you can do half-heartedly. Salsa is a street dance so, if it looks stiff, it defeats the object. I've just got to let loose."
Walsh is only the second contestant in the competition to incorporate an aerial element into her routine, following Anne Widdecombe two years ago.
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