Cheaper by the Coven

Cheaper By the Coven is the 137th episode of Charmed.

Episode Information

 * Season          7
 * Episode No.     03
 * Original Airdate September 26, 2004

Summary
Against Piper's wishes, Paige and Phoebe summon Grams for Chris's wiccaning. To put an end to the brother's sibling rivalry, Grams puts a spell on them, but in the process turns the sisters back to bickering teenagers.