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Entertainment Tonight -- Tori Spelling reveals how she's dropped pregnancy pounds and speaks out about Jessica Alba's post-baby bod!

"I knew as soon as I left the house a week, even two weeks after giving birth, [to 10-month-old daughter Stella] people are going to take pictures and scrutinize," Spelling tells People.com. "Whereas mothers everywhere don't even think about losing the weight for a year. It was hard to find that balance of what's acceptable."

"When I had Stella," she continues, "I remember looking at Jessica Alba [after she gave birth] and thinking, 'Wait a minute, it flew right off her.' Then I read that she works out six days a week and I'm like, 'Oh God, no, I can't do that.'"

Spelling tells the Web site that she dropped pounds by exercising with her family and by incorporating more organic products into her three-meal-a-day diet.