Is it ridiculous that this poor woman's entire life revolves around her weight and body and body image? An ounce of prevention, a snifter of discipline at some point in her childhood and she would have to have developed an actual identity for herself. Imagine if you or I were defined by our lifelong battles with nose picking and finger biting, respectively. Just imagine it. There'd be nothing left of us.
So Ms. Alley gained alot of weight after Cheers, then did a TV show called "Fat Actress" which neither you nor I ever saw and then she vowed to show up on the Oprah show in a bikini, which she did. And it's good that she did, for her. I doubt she has anything to offer anyone else out there, whether they be fat or a fat actress.
Perhaps because I work with kids every day, my answer to everything is "get 'em while they're young". Now, I don't think it would have made any sense to teach diet and exercise extra-explicitly to the child Kirstie, but what could have been beneficial down the road is a little will power and discipline. That framework is something that is definitely difficult to pick up later in life, but once it's learned it can be applied to anything. As long as you learn to put your nose to the grindstone, focus on your weaknesses instead of your strengths etc. at some point, you're head and shoulders above the hoopleheads