Keira Knightley Celebrated Her Oscar Nomination With Apple Juice

The mom-to-be also talks about wearing "comfortable" red carpet looks

Keira Knightley's really wanted some champagne yesterday after learning she was nominated for her second Oscar.

However, as we know, The Imitation Game actress is pregnant with her and hubby James Righton's first baby.

"I tried sparkling apple juice because it looked kind of like champagne in the glass," she said last night at the Critics' Choice Awards at the Hollywood Palladium. "But I was like, 'It's apple juice, come on. Who are you kidding? I mean, I 'm not kidding myself.'"

Righton woke his wife the Oscar news, but it wasn't long before she went back to bad. " I'm pregnant, so you can sleep anywhere," she said. "The problem is staying awake really."

And it's all about being comfortable, no matter how fancy the red carpet may be.

Last night, Knightley stunned in a long silk shirt-dress with a train by Delpozo.

"I just liked it and it's comfortable and it's light weight," she said. "Except that it's long and I keep thinking someone is going to trip on it which they probably will do at some point."

So, if she and Righton have a baby boy, any chance they'll name him Oscar?

Nope.

"That," Knightley said with a laugh, "would be sad."

Hosted by Neil Patrick Harris, the Oscars will air live from the Dolby Theatre in Hollywood on ABC on Feb. 22.

Check out more from the Critics' Choice Awards tonight on E! at 7 p.m. and 11 p.m.