President Donald Trump with North Korea leader Kim Jong Un on Tuesday during their first meetings at the Capella hotel on Sentosa island in Singapore. AP

U.S. President Donald Trump and North Korean leader Kim Jong-un will kick off their highly anticipated summit with a brief one-on-one and a "social dinner" on Wednesday, the White House said.

Trump and Kim are set to meet in Hanoi, Vietnam, on Wednesday and Thursday to discuss the denuclearization of the regime.

Kim arrived at Vienam's Dong Dang station Tuesday morning and Trump is expected to arrive in Hanoi later in the day.

After a brief one-on-one and greetings on Wednesday evening, the two men will each be joined by two officials for a social dinner, White House press secretary Sarah Sanders said.

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Trump will be joined by U.S. Secretary of State Mike Pompeo and acting chief of staff Mick Mulvaney, while Kim will reportedly bring top aide Kim Yong-chol and a "third as yet unknown associate."

No schedule was provided for the second day.

Meanwhile, Trump will hold his first event with Vietnamese officials at 11 a.m. Wednesday.

He is scheduled to meet with Vietnamese President Nguyen Phu Trong, to be followed by expanded bilateral talks, a "commercial trade signing," a photo opportunity with Vietnamese Prime Minister Nguyen Xuan Phuc and expanded bilateral meetings and a working lunch with the prime minister. (Yonhap)