JUST IN: @karolineleavitt is joining Fox News Channel as an on-air contributor after leaving the White House briefing room. The former White House press secretary will provide commentary across the Fox News lineup beginning Nov. 1. "Karoline’s firsthand experience in the White House and on the presidential campaign trail gives her a distinct understanding of today’s political landscape," FOX News Media CEO Suzanne Scott said, adding that Leavitt will bring "authentic and sharp insight" across the network's platforms. Leavitt says she's ready for the next chapter: "I look forward to bringing my unique perspective from my experience as White House press secretary, along with the same energy and candor that defined my tenure, to Fox’s millions of viewers across their many platforms." Leavitt stepped down from the White House in August after making history as the youngest press secretary, saying she wanted to devote more time to her two young children. Read more about Leavitt's move to Fox News and when viewers will start seeing her on air: foxnews.com/media/karoline-l…