X17 XCLUSIVE - Kirstie Alley Loses 25 Pounds In Six Weeks!

The former Fat Actress is slimming down!

Kirstie Alley - who's currently starring in her most recent TV effort, Big Life, for A&E - stopped by a juice bar in Los Feliz Wednesday afternoon and left with a few glasses of carrot juice. Yum! Hey, diets are difficult...

But surprisingly, Kirstie appears to be shedding the pounds! What's the secret to her success? You've gotta have a lot of motivation (or in this case, a television show) to lose weight. Props to Mama K for following through with her promise!