Actress Amanda Seyfried has announced she is expecting her first child.

The star of Mean Girls, Les Misérables and Mamma Mia! has announced she is pregnant with her first child.

Amanda Seyfried confirmed the happy news with PEOPLE magazine, when she showed off her growing bump at an event.

The baby will be the first child for the actress and her fiancé, fellow actor Thomas Sadoski.

Voted and it feels so right #imwithher

A photo posted by Amanda Seyfried (@mingey) on Nov 8, 2016 at 10:36am PST

The pair announced their engagement in September, after first meeting while working together on an off-Broadway show last year.

Early last year, 30-year-old Seyfried expressed her desire to have children, telling Marie Claire UK that she needed to “get on it”.

“I want a child. Badly. I want to be a mother, badly,” she told the magazine.

fbf: the vineyard

A photo posted by Amanda Seyfried (@mingey) on Oct 7, 2016 at 10:41am PDT

“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…so how you can ever be ready for that?”

Congratulations to the happy couple!