True, like a one-time nerd who rolls up to his high school reunion in a Maserati with the quarterback's ex-girlfriend, Hewitt may have seized the opportunity to pose on the Us cover to get back at her critics.
"It was going to be out there," said Howard Bragman, founder of Fifteen Minutes PR and author of "Where's My Fifteen Minutes?" "You've got two choices -- you can deny the weight loss and keep your head in the sand or you can control the release of it and how you did it."
But Hewitt garnered a lot of respect when she rebuked her online haters last year. And by contradicting her "love thy thighs" manifesto, some say she risks alienating the people who stood up for her.
"How do you think those same girls, with butts, boobs, et. al, are feeling now that you posed for the Us cover boasting your weight loss secrets?" Jezebel blogger Jessica Grose asked last week. "The size of your a-- is not my business. It's not anyone's business! But it seems like you're happy to flaunt it for the masses, as long as it's an 'acceptable' size."
What's more, according to Katz, Hewitt's rapid weight loss story is likely to mislead readers.
"For decades now, as obesity's gotten worse and worse, our society has been preoccupied with rapid weight loss by silly and ridiculous means. I'm not impressed by 18 pounds in ten weeks. Frankly, cholera can do better than that. So can AIDS -- that takes the pounds off really fast," he said. "People really need to get perspective. Lose 18 pounds in three weeks? So what, if over the next six months you're going to gain back 30?"
For the non-famous, Katz said the moral of the story is tried and true: Eat right, exercise, stop obsessing about the number on the scale and start focusing on feeling good. For Hewitt, no pun intended: "Maybe she should learn to love the skin she's in."