Amanda Seyfried is pregnant!

Los Angeles - Amanda Seyfried is pregnant with her first child.

The In Time actress announced she is expecting a baby with her fiancé Thomas Sadoski at a Givenchy press event on Tuesday by posing for an exclusive picture of her blossoming bump for People magazine.

Alongside the picture, the publication wrote: "Baby bump alert! #AmandaSeyfried is pregnant! The actress is expecting her first child with fiancé Thomas Sadoski. (sic)"

The pregnancy comes just two months after the pair got engaged.

The 30-year-old star's Last Word co-star popped the question just six months into their relationship.

At the time, a source said: "Tommy and Amanda recently got engaged and shared the happy news with family and close friends."

The blonde beauty and the 40-year-old actor first met in 2015 while co-starring in the play The Way We Get By.

Amanda - who has previously dated Justin Long and Dominic Cooper - will walk down the aisle for the first time, but it will be Thomas' second marriage.

He was previously wed to wife Kimberly Hope for eight years, but they split in the summer of 2015.