Anthony Albanese and Donald Trump have greeted each other at the US president's welcome reception for world leaders attending the United Nations General Assembly.

The prime minister and Mr Trump came face-to-face after Mr Albanese arrived at the evening event in New York with fiancée Jodie Haydon on Wednesday (AEST).

Earlier, a formal sit-down was locked in for the pair following months of speculation and several phone conversations between the two leaders.

About 145 leaders and their partners lined up for hours to get a picture with Mr Trump and First Lady Melania Trump.

During a press conference on the sidelines of the UN meeting, Mr Albanese confirmed the October 20 talks would take place at the White House.

Australia's ambassador to the US, Kevin Rudd, told those attending a speec

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