(PEOPLE.com) -- It's a girl for Jennifer Connelly and husband Paul Bettany!
The actress, 40, welcomed daughter Agnes Lark on May 31 in New York City, her rep confirms to PEOPLE.
The actress had a scheduled home water birth only three days after strolling with her family in New York.
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Their new addition joins big brothers Stellan, 7and a 1/2, and Kai, 13, Connelly's son from her previous relationship with David Dugan.
The couple, who first met while filming "A Beautiful Mind" and later wed in Scotland in 2003, confirmed the pregnancy in December.