Kim's sister gained notoriety during the Winter Olympics in Pyeongchang, South Korea in February, where she met with South Korean President Moon Jae-in.
Any change to North Korean media's day-to-day routine usually signifies that something important is happening.
A jet carrying Kim landed hours earlier.
On May 30, Pompeo met with North Korean spy chief Kim Yong-chol in NY; their discussion concluded two hours earlier than expected, as Kim refused to make any commitment whatsoever on denuclearization, according to the Washington Post. The North Korean autocrat's every move will be followed by 3,000 journalists up until he shakes hands with Trump. Press Secretary Sarah Sanders, Ambassador Sung Kim, and National Security Council Senior Director for Asia Matt Pottinger will join for the working lunch.
The best-case scenario is a return to the era of insults, threats and occasional skirmishes between North and South Korea.
Kim has been more cryptic and calculating, with his regime vacillating between welcoming talks with the United States, ignoring American overtures, and sharply attacking some of Trump's top officials with insults and threats, said Patrick Cronin, director of the Center for a New America Security's Asia-Pacific security program. It's where former Chinese President Hu Jin Tao stayed during the 2009 APEC Summit (and don't tell Trump, but Hillary Clinton stayed there in 2011, too).
Pompeo says US sanctions on the North will remain in place until the North denuclearizes, but he has warned that if diplomacy fails to move in the right direction, the sanctions "will increase".
At least three people have been turned away from Singapore borders due to summit, says Shanmugam.
Just a few months ago, Kim was an global pariah accused of ordering the killing of his uncle, a half-brother and scores of officials suspected of disloyalty. There's a flurry of speculation about what results might come from the summit.
Many experts on North Korea, one of the most insular and unpredictable countries in the world, remain sceptical Kim will ever completely abandon nuclear weapons.
On Monday, U.S. Secretary of State Mike Pompeo suggested U.S. sanctions and other global pressure will continue until North Korea takes steps toward denuclearization.
Kim may be interested in getting aid and eventual investment to stabilize and then rebuild a crumbling economy.
Even Mr Kim's two recent trips overseas to neighbouring China were not reported to the North Korean population until he had returned home.