The 34-year-old actress gave birth to Gloria Ray on April 19 in New York, her rep confirms to JustJared.com.
The family’s latest addition joins older sister, 5-year-old Ramona.
In March, Maggie revealed she was expecting a baby girl, news that she tried to keep under wraps during the first few months of her pregnancy.
Us Weekly was the first to report the happy news.
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