NEW YORK -- Amanda Seyfried is pregnant with her first child.

People magazine reports the actress made the announcement and showed off her baby bump in New York on Tuesday. Seyfried was appearing at an event for Givenchy. The 30-year-old actress is a spokesmodel for the fashion label.

People says this is also the first child for Seyfried's fiance, actor Thomas Sadoski. The magazine reports the pair met in March while working on an off-Broadway show and got engaged in September.

Seyfried is best known for her film roles in "Mean Girls" and "Les Miserables." She also starred in HBO's "Big Love."