Amanda Seyfried Expecting First Child With Fiance Thomas Sadoski

This video is unavailable because we were unable to load a message from our sponsors.

If you are using ad-blocking software, please disable it and reload the page.

Congratulations to Amanda Seyfried and Thomas Sadoski! ET confirms that the newly engaged couple are expecting their first child together.

The 30-year-old actress made quite the statement at Givenchy's press launch for their new Live Irresistible fragrance on Tuesday, announcing her pregnancy in a chic black mini dress which hugged every curve -- including her baby bump.

RELATED: Amanda Seyfried Is Engaged to ‘Last Word’ Co-Star Thomas Sadoski

ET confirmed that the Mean Girls star was engaged to Sadoski in September; the actress was spotted out with a sparkler on her ring finger just a week earlier.

Sadoski and Seyfried first met in 2015 when they starred as lovers in the play The Way We Get By, before again working together on a film, The Last Word, early this year. ET confirmed that the pair started dating in March.

RELATED: Amanda Seyfried Kisses Thomas Sadoski During PDA-Filled Lunch Date

Seyfried opened up to Marie Claire UK about her desire to have children just last year.

"I keep feeling like my eggs are dying off," she admitted. "I need to get on it. I want a child. Badly. I want to be a mother, badly. That's what I feel. I've been feeling it for like, two years."

"I'm not ready but nobody's ready. It changes everything," she added. "So how you can ever be ready for that?"

See more in the video below.

Related Gallery