Are Prince Vincent And Princess Josephine Twins?

Are Prince Vincent And Princess Josephine Twins? Princess Mary gave birth to her third and fourth children, twins Prince Vincent and Princess Josephine, on January 8, 2011. Is there a Princess Josephine? Josephine Sophia Ivalo Mathilda, Princess of Denmark, Countess of Monpezat, is the daughter of TRH The Crown Prince and The Crown Princess. Princess