A representative for the 37-year-old Oscar winner confirms Winslet and husband Ned Rocknroll are expecting a child. People.com first reported the pregnancy Tuesday.
Winslet has two children from her two previous marriages: 12-year-old Mia, whose father is director Jim Threapleton, and 9-year-old Joe, the son of director Sam Mendes.
Winslet and Rocknroll were married in December. Rocknroll is the nephew of entrepreneur Richard Branson.