Professional dancer Vito Coppola won the contest last year alongside Coronation Street actress Ellie Leach.
He’ll be looking to repeat that success on Saturday night with Miranda actress Hadland.
Hadland, 53, has won praise during the series for her strong messages about women believing in themselves.
In video footage ahead of her routine last month, she said she had received numerous messages from women her age who had given up on dancing.
“Other people aren’t telling me what I can and can’t do. I am,” she said to the camera.
It sparked a big reaction online.
“My favourite genre of couple’s choice is a woman talking about self growth and discovery… and deliver the hottest fosse number possible,” said one X user.
“Sarah Hadland melts my heart, I love her so much,” wrote another.
On Saturday, the pair will perform routines including a Cha Cha to Like A Prayer by Madonna, and American Smooth to Proud by Heather Small.
Speaking ahead of the final, Hadland said she went into the contest thinking she was “a very confident person” and someone who knows what she’s capable of.
But during the series, she’s realised she puts limits on herself.
“Now I’ve realised it, you don’t know it’s happened to you, and then you say, ‘Oh, how much in other parts of my life am I doing this?'” she said.
“You shouldn’t ever reach a point in your life for whatever reason, that you say, ‘That’s me, that’s my limit’. You shouldn’t do that, because you’re stopping all these possibilities.”
