The influential sister of North Korean leader Kim Jong-un is to attend Friday's opening ceremony of the Winter Olympic Games, which are being held in the South, ministers in Seoul say.
Kim Yo-jong, a senior Workers' Party official promoted to the politburo last year, will be the first immediate Kim family member to cross the border.
Both Koreas will march under one flag at the opening ceremony, reports BBC.
The North's participation has been seen as a thawing of bilateral ties.
However, the US, Japan and others have accused the North of using the Games for propaganda purposes.