She has been bemoaning the fact she won't be able to touch a drop of alcohol at the Academy Awards due to her pregnancy.
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"I can't drink," grumbles Keira, 29, who is in the running for Best Supporting Actress.
"I'm up for an Oscar and I can't drink. I went to the doctor and she asked if I had any questions. I said, 'Yes, when can I drink? I just want a margarita'."
But while Keira abstains she says husband, Klaxons keyboardist James Righton, is having a great time: "There's a lot of free champagne so he thinks because I'm not drinking mine he has to. I'm eating for two, he's drinking for two."