"It was terrifying but an incredible honour to portray this extraordinary woman," wrote Viola Davis alongside a first look picture of her as Michelle Obama.
The Oscar winner plays the former Flotus in the Showtime anthology series, The First Lady.
The first season which is set to premiere in 2022, will focus on the personal and political lives of Michelle Obama (Davis), Betty Ford played by Michelle Pfeifer, and Eleanor Roosevelt played by Gillian Anderson.
According to Showtime, it will trace "their journeys to Washington through an enlightening intimacy".
Entertainment Weekly shared first look pictures of the actors in character.
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