She has been Princess of Denmark since birth and Countess of Monpezat since 29 April 2008, when Queen Margrethe granted the title to her male-line descendants.
As the heir apparent, she has been Princess of Denmark by birthright and was subsequently granted the title of Countess of Monpezat on 29 April 2008 by Queen Margrethe as part of a tradition to recognize her male-line descendants.