Princess Michael is keen for Scarlett Johansson to star in a film adaptation of her latest book, because she thinks that Scarlett could portray the role of "ugly" Catherine De Medici.

The book, titled The Serpent and the Moon, follows a love triangle between French King Henri II, his wife Catherine de Medici and his mistress Diane De Poitiers.

According to Female First, the Princess explained, "I imagine Cate Blanchett for Diane and Jude Law as Henri - very broody and handsome. And as Catherine de Medici, can't you see Scarlett Johansson? I think it would be quite easy to make her appear ugly."