People Exclusive

Harper's Island's Elaine Cassidy Welcomes a Daughter

Tuesday September 22, 2009 03:25 PM EDT

Elaine Cassidy

Craig Barritt/JPI

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It's a girl for Harper's Island star Elaine Cassidy!

The Irish actress and husband Stephen Lord welcomed their first child, daughter Kíla (pronounced Key-la) Lord Cassidy, on Wednesday, Sept. 16, in London, her rep tells PEOPLE exclusively.

"Stephen and I are absolutely delighted," Cassidy says. The couple announced that they were expecting in March.