[1] The following day, public buses and official buildings flew the Danish flag, the Dannebrog, and at noon a 21-gun salute was fired from the Sixtus Battery at Holmen Naval Base in the Port of Copenhagen and from Kronborg Castle in North Zealand to mark her birth.

[3] Her christening took place on 1 July 2007 at the Royal Chapel of Fredensborg Palace and was performed by the Bishop of Copenhagen Erik Norman Svendsen.

Her godparents were her father's first cousin, Princess Alexia of Greece and Denmark; Queen Mathilde of Belgium (then Duchess of Brabant), Nadine Johnston, Christian Buchwald, Peter Heering and Marie Louise Skeel.

[5] Isabella received the Lutheran rite of confirmation in the same chapel on 30 April 2022, which was presided over by Henrik Wigh-Poulsen, the Danish royal Chaplain-in-Ordinary.

On 20 December 2007, as he had done the previous year for Prince Christian, Per Stig Møller, Denmark's Minister for Foreign Affairs, formally wrote and signed a hand-written document confirming Isabella's position as third in the line of succession to the Danish throne.