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Kirstie Alley Talks 50-Pound Weight Loss: 'This Time It's Different'

Kirstie Alley attends the premiere of HBO's "Girls" fourth season at The American Museum of Natural History on Monday, Jan. 5
Kirstie Alley attends the premiere of HBO's "Girls" fourth season at The American Museum of Natural History on Monday, Jan. 5, 2015, in New York. (Photo by Evan Agostini/Invision/AP)

Over the years, Kirstie Alley has struggled with her weight, and she's never shied away from sharing that struggle with her fans. But now, after a series of public ups and downs, the actress is certain she's found the secret to success.

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