North Korea's state-run television, KRT on Tuesday released a video showing Ri Sol-ju attending a state event alongside leader Kim Jong-un.

Dressed in a black tailored dress suit, the dictator's wife remained at her husband's side throughout an art performance by family members of the country's soldiers, believed to have been held last month.

As is customary in North Korea, Kim and Ri received a standing ovation when they entered the hall and women appeared overcome with emotion at being so close to their leader.

Little is known about Ri Sol-ju, which may well be a pseudonym. She is understood to have married Kim in 2009 soon after he took power, and was likely chosen on the grounds that she resembled the wife of Kim Il-sung, the revered founder of North Korea.