"I look forward to having him join our very successful Administration!" he added on Twitter.
And, last but not least, no one would deny Nauert's attractiveness, which seems crucial in the noble role of being the "US face" and White House policy mouthpiece overseas, doesn't it?
"If Nauert is nominated and approved, people will be interested to see whether she's willing and able to do the diplomatic toil or whether she will see this as an extension of the spokesman position and focus more on presentation of United States position before the Security Council", said Gowan. "Ambassador Haley will always be a true friend of the State of Israel".
Trump's announcement comes just a day after the US lost a high-profile vote in the U.N. General Assembly for a resolution condemning the Palestinian militant group Hamas.
And it's obviously not for nothing that she was nominated for an Emmy Award during her years in journalism, for authoring the special series 13 Around the World. But she has no experience as a diplomat, she has no meaningful experience in government. However, she quickly learned key issues and how the United Nations operates. But without being a member of the Cabinet, she wouldn't have the same independence that Haley has enjoyed.
But the former television anchor has mostly avoided snafus, keeping regular press briefings concise and winning praise for her poise as she fields a dizzying array of foreign policy questions.
Heather Nauert 'to replace Nikki Haley as US envoy to UN'
At the State Department, Nauert scaled back what had previously been daily news conferences in previous administrations, sometimes making them just once-a-week events.
Heather Nauert - the nominee to be the next American UN ambassador - stands alongside US Secretary of State Mike Pompeo on an October 2018 flight to Mexico City. In a speech in Brussels this week, Pompeo made his doubts about the organization clear, asking, "Does it continue to serve its mission faithfully?"
"The balance between Nauert's ambition and autonomy will be interesting", Ashish Pradhan, the International Crisis Group's senior United Nations analyst, said. The role of ambassador to the United Nations does not always have Cabinet level.
She has been chief spokeswoman for the State Department since April previous year, having been poached from Fox.
Trump's decision was first reported by Bloomberg News and if confirmed Nauert is likely face a "tough" Senate confirmation hearing.
In 2016, she travelled to battleground states to report on the presidential primaries and election.
She has also worked as a general assignment reporter for ABC News.