By Andy Patrick
July 01, 2010 at 08:50 PM EDT

Image Credit: Bob Charlotte/PR PhotosGrown-ups love her. Teenagers love her. And now Jane Lynch is about to win over an even younger demographic by guesting on kiddie fave iCarly!

The Glee villainess has been cast as the much-mentioned-but-never-before-seen mom of Jennette McCurdy’s Sam, sources confirm to me exclusively. Her episode, which goes before the cameras next week, will air during the Nickelodeon hit’s upcoming third season.

It won’t just be Gleeks stoked about this casting coup, either. The actress’ own 8-year-old stepdaughter is a huge iCarly fan — so huge that Mom even included a reference to it in her wedding vows!

What do you think? Are you already an iCarly devotee? If not, will Lynch’s pop-in be enough to entice you to try it out? Sound off below!