Katie Zacharia is out as White House press secretary. Meet the 6 Trump has had over both his terms.

What happened: Katie Zacharia held her first briefing as White House press secretary on Tuesday, after President Donald Trump chose her to succeed Karoline Leavitt, who left the White House in August. Key numbers: Zacharia is the sixth White House press secretary of Trump's two terms. Three served less than a year. Why it matters: Leavitt resigned citing a desire to spend more time with family and will begin as a Fox News on-air contributor starting November 1. Zacharia's first briefing addressed the resignation of Kimberly Guilfoyle, US ambassador to Greece. Coverage: 10 outlets in 24h

Katie Zacharia held her first briefing as White House press secretary on Tuesday, after President Donald Trump chose her to succeed Karoline Leavitt, who left the White House in August.

Leavitt resigned citing a desire to spend more time with family and will begin as a Fox News on-air contributor starting November 1. Zacharia's first briefing addressed the resignation of Kimberly Guilfoyle, US ambassador to Greece.