Megan Fox, Mila Kunis, Sofia Vergara and Scarlett Johansson may be frequent visitors to the top of every “Sexiest Woman Alive” list today. But that doesn’t mean that their names will still be boldfaced a decade from now. Or even remembered.

Don’t believe us? Just ask Tracy Camilla Johns, Tanya Roberts, or Heather Thomas. If your response to that lineup of lovely ladies is, “Who?,” well, that just proves the point that Hollywood is a highly fickle place. One where today’s hot young things are tomorrow’s where-are-they-now sidebars, as evidenced by these 25 Forgotten Sexy Actresses.

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