Donald Trump names Karoline Leavitt as youngest ever White House press secretary

Karoline Leavitt speaks to media across the street from Donald Trump’s criminal trial in New York in May (Ted Shaffrey/AP)

US president-elect Donald Trump named Karoline Leavitt to serve as his White House press secretary on Friday.

Ms Leavitt already worked on Mr Trump’s election campaign as his press secretary and is a spokeswoman for his transition back to the Oval Office.