Anne Hathaway insists she's usually a "very, very bad liar" -- except when it came to her pregnancy.
The 33-year-old actress gives her reasons to ET's Cameron Mathison about why she fibbed a little when she was expecting. "I get very flushed when I lie, so I am very bad at keeping secrets. People can always tell what's up," Hathaway admits at the Toronto International Film Festival premiere of "Colossal," which is about a woman who discovers that severe catastrophic events are somehow connected to her mental breakdown. "The only secret that I kept, and I will tell you I got really good at lying, was when I was pregnant."
She adds, "I lied about everything having to do with it."
Hathaway explains that she chose to be untruthful about her pregnancy as a way of shielding her child-to-be. "I did not feel like, 'Oh, I am lying,'" she confides. "It was like, 'No, I am protecting.'"
She quips, "I am a boxing-out mama bear."
WATCH: Anne Hathaway Reveals the Horrible Post-Baby Gym Encounter That Made Her Cry
Hathaway and husband Adam Shulman welcomed a baby boy, Jonathan Rosebanks, in March. A few months later, she spoke to ET about shedding her pregnancy weight and how Shulman was doing with fatherhood.
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