No other details regarding the child -- such as exactly where and when he was born or how big he is -- were immediately released.
Sigler, 32, is best known for her work on TV's "Guys with Kids" and "The Sopranos."
She is engaged to Washington Nationals infielder Cutter Dykstra, 23.
Senate Democrats to pull all-nighter on climate change
Susan Sarandon 'very excited' about daughter's pregnancy