Kim Yo-jong is the younger sister of North Korean Supreme Leader Kim Jong-un and a high-ranking official of the Workers’ Party of Korea. She joined the Workers’ Party of Korea (WPK) in 2007, eventually serving as secretariat to her father, Kim Jong-il, until his death in 2011.
Kim Yo-jong continued to ascend her party’s ranks under her brother’s rule, taking control of his image as first vice-department director of the Propaganda and Agitation Department and later becoming an alternate member of the WPK’s powerful politburo.
After making a highly publicized appearance at the 2018 Winter Olympics, Kim joined her brother for his denuclearization summits with U.S. President Donald Trump.
Kim Yo-jong’s birthdate is listed as September 26, 1987. In 1996, she was sent to Switzerland to continue her education, attending Liebefeld Hessgut public school and later was joined by her brother Kim Jong-un at Liebefeld-Steinhölzli public school, the two enrolled under pseudonyms. She reportedly graduated from Pyongyang’s Kim Il-sung University in 2007 with a degree in computer science.
When reports of Kim Jong-un’s poor health surfaced earlier this month, the media focused on Kim Yo-jong as a possible successor. Some analysts suggested that she is the most likely choice to follow her brother, given her ties to the “Paektu” bloodline that the family claims for divine ruling rights, while others argued that the male-dominated WPK would prefer a collective leadership.
Even young people seem to be picking up on Kim Yo-jong, as evidence by this Twitter account.
Kim Yo-jong is married In early 2015. It was reported that Kim Yo-jong married Choe Song, son of a l lieutenant of Kim Jong-un, Choe Ryong-hae. She was reported to be pregnant in spring 2015, and again around the time of the 2018 Winter Olympics.
[Includes excerpts from Biography.com]