48 Hours Investigates the lengths women - and men - go to so they look "just so." What we learned is, it's much harder than you'd think. To prove the point, we'll take you behind the scenes with a movie star, a rock star, a model and even 48 Hours Investigates itself. I've been a fan of Roberta Flack for decades (who hasn't?). Now that I've spent time with her, I like her on a whole new level: she's candid; she's fun, sassy, and smart. How many of you know that she's a classically trained musician? What will endear you all is that, like so many of us, she's been working on her weight forever. Now, after losing 35 pounds in four months, Roberta tells us how she did it: with mesotherapy, a system involving a series of injections that Europeans have been using for years. You'll also hear from Jamie Lee Curtis, who starred in the movie "Perfect," and model Christie Brinkley, both refreshingly honest about what magazines do to make them look perfect, even on days when they're far from it. Are the touched-up photo spreads sending the wrong message to young people? I think you'll be surprised at their answers.