Why has Cheers star Kirstie Alley packed on 83 pounds after her widely publicized diet as a spokesperson for Jenny Craig in 2007?

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She told People magazine, "A vegetarian would probably be eating vegetables. But to me being a vegetarian meant I'm going to eat enchiladas with no meat, and I'm going to eat lots of bread, lots of carbs."

Hey, Kirstie: put the slimy, butter-slicked fork down! Vegans are, on average, 10 to 20 pounds lighter than meat-eaters are, so we promise you'll see results!

If Nia Vardalos can drop 40 pounds by kicking cheese, Kirstie surely would slim down if she said, "Bye, bye, butter!" and gave vegan fare a shot. To help her in this endeavor, a copy of Skinny Bitch is on its way to her, courtesy of PETA.

Written by Karin Bennett

"Hold the cheese, please!"

Nia Vardalos, star of the smash movie My Big Fat Greek Wedding and the upcoming film My Life in Ruins, dropped 40 pounds simply by repeating those four little words at every meal.

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Nia attributes her skyrocketing "Wow!" factor to her dairy-free diet. She told People magazine, "I broke up with cheese. … [C]heese keeps calling me and trying to get me to meet at a cheap motel but I'm really committed to just staying single for awhile."

Drop dairy to shed flab and help cows? It really can be that simple.

Written by Karin Bennett