On 25 July 2012, North Korean state media reported for the first time that Kim Jong-un is married to
Ri Sol-ju (리설주).
[142][143] Ri, who appears to be in her early 20s, had been accompanying Kim Jong-un to public appearances for several weeks prior to the announcement.
[143] According to a South Korean analyst, Kim Jong-il had hastily arranged the marriage after suffering a stroke in 2008, the two married in 2009, and they had a child in 2010.
[144] Dennis Rodman, after visiting in 2013, reported that they had a daughter named Ju-ae.
[145][146] However, South Korean sources speculated that they could have many children.
[147]
Kim is sometimes accompanied by his younger sister
Kim Yo-jong,
[16][17] who is said to be instrumental in creating his public image and organising public events for him.
[148] According to Kim Yong-hyun, a professor of North Korean studies at Dongguk University in Seoul, and others, the promotion of Kim Yo-jong and others is a sign that "the Kim Jong-un regime has ended its co-existence with the remnants of the previous Kim Jong-il regime by carrying out a generational replacement in the party’s key elite posts".
[149][150]
https://en.m.wikipedia.org/wiki/Kim_Jong-un
I assume the younger sister that got LOTS of media attention at the Olympics would take over