09/22/2009 at 11:00 AM EDT
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.