A dynastic marriage between the sister of North Korean leader Kim Jong-Un and the son of one of the dictator's key allies may help "cement the close-knit cadre that control the reclusive state," Agence France-Presse reported.

Photos of Kim Yo-Jong wearing a wedding band on the ring finger of her left hand as she visited the newly built Pyongyang Baby Home and Orphanage appeared in Rodong Sinmun, the Communist regime's official mouthpiece. Kim's sister, believed to be 27 or 28, oversees propaganda for the ruling Worker's Party.

"As far as I know, Kim Yo-Jong, deputy director of the Workers' Party, got married to a son of the party secretary Choe Ryong-Hae," the South Korean news agency Yonhap revealed based on an unnamed Chinese source.

Choe, who holds the rank of vice marshall in the hermit kingdom's more than 1-million strong Korean People's Army, "is widely viewed as Kim's number two," according to AFP. Little is known about Choe Song, Choe Ryong-Hae's son and Kim Yo-Jong's supposed bridegroom; he is believed to be in his early thirties, Reuters said.

The senior Choe, meanwhile "is a high-ranking member of the ruling Workers' Party widely seen as a close confidant of Kim," Newsweek noted.

"The marriage has allegedly helped Choe ... secure his position within Kim's inner circle after his rapid ascent to the top of the party just last year," AFP opined. The vice marshall visited Moscow as the Kim's special envoy in November, the news service added.

Kim's sister, who once studied with her brother in Switzerland, is the only other member of the dictator's family to play a significant political role in isolated North Korea. In recent months, she has often been seen accompanying the dictator on his "field guidance" trips, AFP said.

Kim Yo-Jong has been a member of the powerful National Defence Commission since 2013, prompting speculation she might play a role similar to that of her her powerful aunt, Kim Kyong-Hui, during the reign of the siblings' father, Kim Jong Il.

Kim Kyong-Hui had held various senior positions in the state, AFP noted. But the 68-year-old largely disappeared from public view after her husband, Jang Song Thaek, was executed in December 2013 after Kim had accused him of treason.