Jennifer Connelly showed up to the Chicago premiere of her film 'The Dilemma' on Thursday with a healthy baby bump.

UsMagazine reports that the 40-year-old actress was "all smiles" at the world premiere.

The baby will be Connelly's second with husband Paul Bettany, 39. The two have a 7-year-old son, Stellan, and Connelly has a 13-year-old son, Kai, from an earlier relationship.

The couple announced the pregnancy in December 2010. In 2009, Connelly talked to the U.K.'s Daily Mirror about parenting: "Becoming a mother has made all the difference in terms of learning to take more responsibility for myself and my life. Parenthood changed the way I do everything. The biggest thing for me is wanting my kids to grow up safely and have happy lives. To me, that's enough."