The model dated the royal over the summer, when she invited him to spend time with her in Ibiza.
However, the pair split in August as Harry continues to focus on his Apache helicopter training.
Brudenell-Bruce, who has also dated Formula One star Jenson Button, is now "seriously considering" signing up to star in the third series of Made In Chelsea, which follows the lives of wealthy socialites living in the West London district.
An insider told The Sun: "People love knowing more about the inner royal circles and Made in Chelsea producers think she would be a perfect addition to the cast.
"They love that she has a wild streak and know people want to find out more about the girl who wooed a prince."
Topshop billionaire Sir Philip Green's daughter Chloe joined the show at the beginning of its current second series.
> Prince Harry cocktail waitress: 'We're not dating'