Co-star Shirley MacLaine also gushed about Seyfried and Sadoski's 'love affair.'
Future parents night out! Amanda Seyfried and her actor fiancé, Thomas Sadoski, hit the town on Wednesday night for the Hollywood premiere of their new movie, The Last Word.
The pregnant actress was glowing in a black and mint green Chloe maternity dress with Givenchy heels, showing off her baby bump. Her proud man stood by her side in a grey suit jacket and black pants.
WATCH: Amanda Seyfried's Fiance Thomas Sadoski on Her Pregnancy: 'She's Already an Incredible Mom'
The pair announced Seyfried’s first pregnancy in November after revealing that they were engaged in September.
Though there’s plenty of happy news in Seyfried’s life at the moment, the actress did take a minute to remember her late Big Love co-star, Bill Paxton, who passed away last week at the age of 61.
WATCH: Bill Paxton Dies at 61: Tom Hanks, Helen Hunt and More Celebs Pay Tribute to Actor
“It's really sad,” she told ET. “It's like there's nothing, nothing I can say that can, you know... I feel really awful for his family, but I'm looking forward to seeing them. Yeah, it's weird. It's too young. Way too young.”
For more on Paxton’s death, watch the clip below.
