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Jamie-Lynn Sigler is a mom!

The "Sopranos" actress, 32, and her fiancé Cutter Dykstra, 24, welcomed a son on Wednesday, ABC News confirmed.

"Both mother and baby are doing great!" a rep for the actress said.

No other details were available.

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Sigler and Dykstra, a Washington Nationals minor league infielder, first went public with their romance in March 2012 and announced their engagement in January.

"So this just happened . . . " Sigler tweeted with a photo of her wearing the ring.

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"She said yes!!" Dykstra tweeted.

This will be the first marriage for Dykstra, whose father is baseball player Lenny Dykstra. Sigler was married to manager A.J. DiScala from 2003 to 2005.