"I pushed her buttons," Biel admits of her sisterly bond with Mitchell.Jessica Biel and Beverley Mitchell didn't just play sisters on 7th Heaven, they acted like them behind the camera, too.Biel was "secretly a little afraid of Beverley" when they worked on the series,

Heaven is eying a return. Anthony Sparks is set to write the potential new incarnation for CBS Studios. Jessica Biel would executive produce.

Jessica Biel spoke to the family dynamic on the set of '7th Heaven' while speaking to 'InStyle' about her career.