The wife of North Korean dictator Kim Jong Un this week made her first public appearance in almost four months, the South Korean Yonhap newswire said based on reports by the North's official Korean Central News Agency.

First lady Ri Sol Ju joined her husband at a Pyongyang soccer match commemorating the 103rd birthday of his late grandfather, dictator Kim Il Sung, who founded the Communist state and established the ruling Kim dynasty.

The capital is set to hold the so-called "Day of the Sun" on Wednesday to further adulate the leader, who died in 1994. North Korea has organized "lavish sporting events and festivals" ever since it designated the elder Kim's birthday a two-day national holiday in 1994, Yonhap noted.

Ri, who is said to be in her late 20s or early 30s and pursuing a doctorate in science as a graduate student at Kim Il Sung University, in previous years had appeared at a "Mickey Mouse" concert, a mausoleum, a kindergarten, a funeral and an amusement park, according to the Daily Beast.

Last Dec. 17, she and her husband attended a ceremony commemorating the third anniversary of the death of the dictator's father, Kim Jong Il, Yonhap detailed. On that occasion, the Korean Central News Agency released a photograph showing the two surrounded by military brass and high-ranking party officials as they visited the Kumsusan Palace of the Sun in Pyeongyang.

This week, they were once again pictured alongside the totalitarian state's elite, which on Monday had assembled in the capital's Kim Il Sung Stadium, Agence France-Presse noted. During the men's football match, Ri was seen grinning and clapping next to her husband, the French news service detailed.

The first lady wore what appeared to be a wedding ring on her left hand, AFP said. Ri is believed to have married Kim in 2009 or 2010 and to have given birth to a child the following year, the Daily Beast recalled.