Where is Melania Trump? First lady finally appears at White House after absence

First Lady Melania Trump has been relatively absent in Washington D.C. since her husband took office more than a month ago, but she made one of her first appearances working alongside her husband on Tuesday.

Cameras captured glimpses of the first lady at work while the president led a trio of Fox & Friends' hosts throughout the White House Monday for an exclusive tour.

See photos of Melania Trump's first 100 days as first lady

"Hello first lady!" the president exclaimed as he led hosts around the White House.

The first lady greeted the guests as she sat with her team, fielding questions from the news outlet about the type of planning that goes in White House events.

"Everything," she responded. "You know, planning is almost like you're planning a wedding every time."

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She also joined the president and her step daughter Ivanka Trump in the Oval Office as President Trump signed legislation directing NASA to increase STEM opportunities for girls and women. It's the second time the first lady has been photographed in the Oval Office.

The appearance comes the morning of President's Trump's first address to a joint session of Congress. Some had questioned whether the first lady would attend the event, since she has primarily resided in New York City alongside son Barron Trump since her husband took office.

But the first lady is planning to attend Tuesday's primetime address, sitting in special seat in the gallery along with other important guests personally invited by Trump.