Leelee Sobieski Becomes a Mom
12/17/2009 AT 04:05 PM EST
The Emmy-nominated actress delivered a daughter, Louisanna Ray Kimmel, late Wednesday evening in New York City, Sobieski's rep confirms to PEOPLE.
The couple – who became engaged in June and announced the pregnancy in September – are still planning to wed.
"We have pushed that back," the actress said about her nuptials. "We are going to maybe do it in the spring."
Joan of Arc star Sobieski, 27, most recently appeared in this summer's Public Enemies alongside Johnny Depp; She can next be seen in The Mad Cow opposite Jeffrey Tambor.
Reporting by KRISTEN MASCIA