Would Tony Soprano approve of his TV daughter's new flame?

Actress Jamie-Lynn Sigler, 30, is currently dating Washington Nationals infielder Cutter Dykstra, son of former Mets star Lenny Dykstra, a source confirms to Us Weekly. (Their coupling was first reported by The New York Post's Page Six.)

"She's so happy. They're really cute," the source explains to Us. "She was set up by JoAnna Garcia and Nick Swisher."

Another insider tells Page Six that Sigler and Cutter, 22, have been dating "for a few months, and things are going really well. I haven't seen her this happy in a long time."

Sigler's previous loves include New York Jets quarterback Mark Sanchez, 25, and Entourage actor Jerry Ferrara, 32. She was married to her manager A.J. DiScala from 2003-2005.