Stephanie Grisham, who has been on Team Trump since 2015, most recently as Melania Trump's communications director, will be taking over the role of press secretary at the White House from Sarah Huckabee Sanders.
The announcement was made via a Tweet from Mrs. Trump.
Grisham will also be White House communications director, filling in the gap that was left by former Fox News exec Bill Shine when he left that position in March.
Sean Spicer previously held both roles as well.
Grisham has been known as a staunch supporter of Mrs. Trump, issuing a statement when the president's first wife, Ivana, referred to herself as first lady. When former deputy national security advisor Mira Ricardel was fired at the instigation of Melania Trump, Grisham issued the statement that Ricardel "no longer deserved the honor of serving in this White House."
Mrs. Trump's Tweet said that she could "think of no better person to serve the Administration & our country."