First daughter and White House senior adviser Ivanka Trump shut down any speculation that she might be chosen to replace outgoing United Nations Ambassador Nikki Haley with a tweet Tuesday.

“It is an honor to serve in the White House alongside so many great colleagues and I know that the President will nominate a formidable replacement for Ambassador Haley,” Trump said hours after it was revealed Haley would depart her post at the end of the year. “That replacement will not be me.”

[Read: The top 10 contenders to replace Nikki Haley at the UN]

Multiple pundits and journalists speculated Trump may be nominated to replace Haley, including CNN anchor Poppy Harlow, who suggested it may interest the first daughter.

“I do think she may have some interest in a role like this that would truly put her on the world stage and put her focus on some more of the global issues where she may be able to have some success,” Harlow said.

President Trump told reporters on the South Lawn of the White House earlier Tuesday that his daughter “would be dynamite” as an ambassador, but said he face accusations of “nepotism” if he nominated her.

"I think Ivanka would be incredible. Doesn't mean can I pick her. I would be accused of nepotism," Trump said. "I can be accused of nepotism, if you can believe it."

Trump said Haley “is going to help me make the final pick” on her successor, and he singled out former White House adviser Dina Powell as a possible nominee.

Haley met Trump in the Oval Office Tuesday morning and they announced she was resigning and would officially leave her post by year's end. It’s uncertain why Haley is departing her post, but Trump said that Haley foreshadowed her exit about six months ago and that he wanted an on-air goodbye to dispel speculation about an adversarial ouster.