Photo by: Brian Doben
How They Keep It Off | Kirstie Alley, Valerie Bertinelli
"Is that really me? Did you stretch me somehow?" Valerie Bertinelli stares at the image of herself on a photographer's monitor in disbelief. He tells her no, he hasn't used any computer tricks; rather, after losing 30 lbs. in just over four months as a Jenny Craig spokeswoman, she really is that slim. Hearing that, Bertinelli, 47, tears up a bit. "I want to get to the size I was when [my son] Wolfie was...