Melania Trump's longtime spokesperson Stephanie Grisham will be the new White House press secretary

Stephanie Grisham will reportedly be the new White House press secretary and communications director.

She previously ran communications for first lady Melania Trump.

Grisham has been with President Donald Trump since his 2016 presidential campaign.

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First lady Melania Trump announced on Tuesday that her longtime spokeswoman Stephanie Grisham would be taking over as White House press secretary and communications director when Sarah Huckabee Sanders departs.

Grisham will be just the fourth woman to ever hold the role of White House press secretary and the third under a Republican president.

Read more: 8 of Sarah Sanders' most notorious moments as White House press secretary

“I am pleased to announce @StephGrisham45 will be the next @PressSec & Comms Director!” Trump wrote on Twitter Tuesday afternoon. “She has been with us since 2015 - @POTUS & I can think of no better person to serve the Administration & our country. Excited to have Stephanie working for both sides of the @WhiteHouse. #BeBest.”

Grisham has been with President Donald Trump for several years and worked on his 2016 presidential campaign. While Trump has been in the White House, Grisham has been in charge of communications for the first lady.

Sanders announced she would be leaving the White House last week, with Trump encouraging her to pursue a run for governor in her home state of Arkansas, a position her father, Mike Huckabee, once held.

During her tenure, Sanders oversaw a significant decline in traditional press briefings, going several months at a time without discussing the president's agenda from the White House podium.