The 25-year-old actor said she usually dresses up in formals but slipping in glitzy, body-hugging dresses for the contest is a major turnaround for her, reported OK! magazine.
"I'm really excited (about the costumes). I'm not very pen with my body.
"It will be a massive thing for me to wear those costumes, I'm much more a trousers and blazer type of girl, rather than a little dress," Vincent said.
The "Coronation Street" actor said her mother is eagerly waiting to see her in the sparkly attire.
"I'm the least pink, sparkly person but I've had some pink clothes sent to me with my name on the back in sparkles. The show is changing me!" she said.