The gorgeous actress looked radiant as she walked the red carpet at the Los Angeles screening of Her on Thursday evening (12 December).
Olivia and her fiance Jason Sudeikis announced at the end of October that they are expecting their first child together, but have kept mum on any additional details.
One thing we do know, however, is that Olivia is a seriously stylish yummy mummy to be!
The 29-year-old looked beautiful in her slinky David Koma dress teamed with sky high Jimmy Choos and gorgeous glossy curls.
She walked the red carpet without comedian Jason. They announced their engagement in January following a Christmas proposal.
Yesterday, the former House actress was up bright and early in Los Angeles to help announce the Golden Globe nominations for 2014. As always, she looked gorge while doing it, although admitted to her Twitter followers she hadn't felt the most glamorous that morning...
"On way to LA. Getting up at 3:30 AM to announce Globes noms w @azizansari and @zoesaldana. Can I wear my head gear? I genuinely might puke."
Catch Olivia in Her, a science fiction movie co-starring Joaquin Phoenix, when it opens in UK cinemas on 14 February 2014.
More pregnant celebrities in Reveal's gallery below!
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