Chris Klein: Alcoholism almost killed me

chris-klein-reunion-gi.jpg "American Pie" star Chris Klein is opening up about his struggle with alcoholism.  

Now 19 months sober, two DUI arrests and a jail sentence convinced him to turn things around.

"I would have died, and I think about that every single day," the actor, 33, tells People. "It got to the point where I was a fragile shadow of the young man that came into this business," he says. "Today, I'm the luckiest guy alive."

Klein details how he slid into alcoholism after achieving fame early on in his career.

"It was nothing short of magic," says Klein, who dated Katie Holmes from 2000 to 2005, of his early success.

Klein recently co-starred in "American Reunion" -- which reunited him with co-stars Jason Biggs, Alyson Hannigan, Seann William Scott and Tara Reid -- for an update. It's due in theaters April 6.

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