In Pictures: Hollywood's Most Overexposed Celebrities

No. 1: Paris Hilton

Overexposed Score: 65%*

Life has been anything but simple for one of the world's most notorious celebutantes. After spending a brief period behind bars, the elder Hilton sister is back on the Los Angeles nightclub circuit. Up next: the Simple Life star is searching for a new best friend on--what else--a reality TV show.

*Source: E-Poll Market Research, which provides over 46 "appeal" rankings for nearly 4,500 celebrities. For perspective, most celebrities are described as "overexposed" by between 3% and 7% by those polled during the peak of their careers.