Hathaway had announced on Wednesday that she is pregnant with her and husband Adam Shulman's second child. The two are parents to 3-year-old son Jonathan Rosebanks Shulman.
After the TCA panel, Hathaway was also asked her thoughts on the key to a lasting relationship.
"Oh gosh, in my case, just be married to my husband," she said. "But I don't think that helps other people."