Some celebs, such as Allegra Versace, are consumed with anorexia.
Others, such as Valerie Bertinelli, best known for her 1975-84 sitcom One Day at a Time, have got some different, but still exciting career news to share with us:
As a result, she's got a new role - joining fellow fattie Kirstie Alley as the new celebrity face - and body - for Jenny Craig.
The 5'2" Bertinelli, who turns 47 this month, vows to lose 30 pounds by September (from a size 14 to a size 8).
Going public with her goal "is the motivation I need," Bertinelli says. "I need to do this in front of millions of people so I can't mess up."
And Valerie Bertinelli is not shy about it, adding: "It is freeing because I can say it first: I know what you're thinking, I'm fat."
She's a good role model for Jennifer Hudson.
Bertinelli says that Alley, who has maintained her 75-pound downsizing, also offered some advice:
"She said, 'Even if Wolfie [the 16-year-old son of Bertinelli and her ex, rehabbing Hall of Fame rocker Eddie Van Halen] wants to go to In-N-Out Burger, don't do it, because paparazzi will photograph you!'"
Freaking pararazzi. Just ask Justin Timberlake about those bastards...
The Jenny Craig campaign, for which Bertinelli will shoot a new ad every month as she shrinks, represents a major step back into the public eye for the mom whose last big TV role was on Touched by an Angel in 2003.
"Wolf is my priority," she says of her son. "I was a Hollywood hermit."
If only Britney Spears felt that strongly about Jayden James.
Although Bertinelli remains guarded about her current weight, her boyfriend Tom Vitale has been supportive of her. Which is nice, because she's focused on her goals.
"I don't know how my size, 14, has become obese while size 0 is normal," she says. "It's insane. I'm not even going for a size 6. I'll be happy with an 8."
We'll be happy (and shocked) if Nicole Richie makes it to age 30.