One of the most reliable ways used to date ancient artifacts is to monitor the decay of carbon-14 isotopes. One of the most reliable ways to date more recent events is to determine what Cher was wearing, or whom she was dating, at the time. Roller skates? Probably '79. Josh Donen? Late '84, early '85. For the benefit of cultural anthropologists everywhere, here's a brief look at Cher—the woman, the actress, the chronological litmus test—as seen in 15 years of PEOPLE.
On Newsstands Now
- Matthew McConaughey: The Time of My Life!
- 45 Pages of Oscar!
- The Pistorius Trial: Why Did He Kill Her?
Pick up your copy on newsstands
Click here for instant access to the Digital Magazine