The Australian actress and singer, who finished fourth in the BBC dancing competition, is shown as Truman Capote's Breakfast at Tiffany's heroine Holly Golightly below.
The campaign is part of Camelot's efforts to encourage a number of British Euromillions players who have yet to come forward with their winning tickets.
"It was a dream come true for me to be able to recreate a scene from The Millionairess to celebrate the fact that 25 lucky Brits won £1 million this Christmas," Valance sad. "I urge players to check their tickets to see if their dreams came true this Christmas too."
As well as recreating Raquel Welch's famed One Million Years B.C. picture (above), the 28-year-old has also taken on several other iconic poses.
Last week, pictures of Valance as Sophia Loren in The Millionairess, Betty Grable and Barberella were also unveiled.
Valance announced her engagement to billionaire boyfriend property developer Nick Candy last month.
She revealed the news to followers on Twitter, describing it as the "happiest day of my life".
> 'Strictly Come Dancing' 2011 - The Top 10 dances of the series - video