Thomas Sadoski and Amanda Seyfried attend "The Way We Get By" opening night after party at Four at Yotel on May 19, 2015 in New York City. Credit: Jim Spellman/WireImage

Surprise! Amanda Seyfried is pregnant and expecting her first child with fiancé Thomas Sadoski, a rep for the couple confirms to Us Weekly. The Last Word actress, 30, debuted her baby bump in a sheer black minidress at the launch of Givenchy’s new fragrance, Live Irrésistible, on Tuesday, November 29. Seyfried is a spokesmodel for the brand.

The Mama Mia! actress’ baby news comes on the heels of her engagement to Life in Pieces star Sadoski.

Us Weekly exclusively revealed Seyfried’s engagement to Sadoski last month. The couple met in 2015 when they starred in the play The Way We Get By together and started dating shortly after filming The Last Word earlier this year.

“Tommy and Amanda recently got engaged and shared the happy news with family and close friends,” a source close to the costars told Us at the time.

Seyfried told Marie Claire U.K. last year that she was eager to start a family. "I keep feeling like my eggs are dying off. I need to get on it. I want a child. Badly. I want to be a mother, badly,” she told the magazine. “That's what I feel. I've been feeling it for like, two years."

This will be the first child for Seyfried and the Newsroom actor, who was previously married to ex-wife Kimberly Hope. 

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