He became Crown Prince of Denmark following his grandmother's abdication and his father's subsequent ascension to the Danish throne on 14 January 2024.

[3] Christian was baptized on 21 January 2006 in Christiansborg Palace Chapel by the Bishop of Copenhagen Erik Norman Svendsen.

[citation needed] He received a number of presents on the occasion of his christening, including a pony called Flikflak from the Folketing, Denmark's national parliament.

[7] On 11 September 2006, Per Stig Møller, Denmark's Minister for Foreign Affairs, formally wrote and signed a hand-written document confirming Prince Christian's place in the line of succession.

[13] In April 2021, it was announced that Christian would undertake his secondary education at the Danish boarding school Herlufsholm, starting in August 2021.

[14] In June 2022, shortly after finishing the first year of his upper secondary education, it was announced that Christian would no longer attend the school, after recurring allegations of bullying, violence and sexual abuse at the institution surfaced in a documentary.

[17] Christian undertook his first official engagement when he attended the opening of a new elephant house at the Copenhagen Zoo with his grandfather, Prince Henrik in 2008.

[18][19] In 2010, Christian and his grandfather revealed a portrait of Prince Ulrik at the Museum of National History at Frederiksborg Castle, and in 2012, also at the Museum of National History, he and Queen Margrethe II revealed the first ever portrait of him (with his father and grandmother), commissioned for the Queen's Ruby Jubilee.

[citation needed] Likewise, he accompanied his parents on most of their engagements during the family's official visit to the Faroe Islands on 23–26 August 2018.

[23] For the 18th birthday of Prince Christian, which marked the beginning of his royal duties, Margrethe II hosted a banquet at Christianborg Palace.

[26] Christian's grandmother, Queen Margrethe II, announced her pending abdication on live television in her New Year's Eve address on 31 December 2023.