2. Britney Spears suffered a devastating break-down in 2006, when she shaved her hair off. But she's a rare success story, having kicked her addictions all on her own. Now she's the reigning queen of pop, again.

3. Amy Winehouse met a tragic end, joining the ever-growing "27 Club".

4. Whitney Houston is hardly recognizable in this picture from her latter years.

5. Tara Reid. Can you believe they're both the same people?