[2][3] At noon on 8 January, a 21-gun salute was fired from the Sixtus Battery at Holmen Naval Base in the Port of Copenhagen and from Kronborg Castle in Elsinore in North Zealand to mark the arrival of the two royal children.

[6] Princess Josephine wore a christening gown found among her great-grandmother Queen Ingrid's belongings, making her the first child of a future Danish monarch not to wear the Danish royal family's traditional christening gown (which was worn by her twin brother) since it was taken into use in 1870.

[7] The Princess's name was announced as Josephine Sophia Ivalo Mathilda.

[8] Her godparents are her paternal aunt, Princess Marie of Denmark; her maternal aunt, Patricia Bailey; as well as her parents' friends Prince Carlo, Duke of Castro, Count Bendt Wedell, Birgitte Handwerk and Josephine Rechner.

In August 2023, the Royal House announced that Josephine would be starting at Kildegård Privatskole in Hellerup in September 2023.