The Moonlight star, who also appears on the Netflix series House of Cards and Luke Cage, shared a photo on Instagram on Thursday with wife Amatus Sami-Karim, who was clutching her burgeoning baby bump.
ET spoke to Ali last month, when he opened up about his Moonlight role and his acting experience as a person of color.
"My task is to make these people human,” Ali shared. "Often the characters in my acting experience were there to help push the story along, so I’m always fighting to find the shaft of light where I can wedge an opening and make the character real. That’s a muscle a lot of people of color have to work to be successful in this industry, so people can say, ‘Oh, this brother’s got it.’"