The couple also have a 3-year-old son, Jonathan, and while announcing the pregnancy she noted that she had faced struggles on her road to motherhood, writing, “It was not a straight line to either of my pregnancies.”
Hathaway’s bump was also on display as she promoted her new series, Modern Love, at Amazon's Summer Television Critics Association press tour in Beverly Hills, California, days after the announcement.
ET caught up with the star at the event, where she opened up about her pregnancy.
"I am really happy,” she said. "This is something I've been wanting for a while and I'm really happy it's happening."