Britney Spears, whose every move from club-hopping to head-shaving has grabbed gobs of tabloid ink. But rather than earn her adoration, the recent media onslaught has resulted in eye rolls. And worse.

According to studies by Encino, Calif.-based E-Poll Market Research, which provides appeal rankings for more than 3,000 celebrities, 72% of the U.S. population would use the term "overexposed" to describe Spears in 2007, as compared to only 54% five years earlier.To put that in perspective, most celebrities average between 3% and 7% during the peak of their careers. Worse: During that same period, her "talented" score, the presumed basis for her celebrity, fell from 35% to 25% on the E-Poll index.

But Spears isn’t the only star to have worn out her public welcome. Among others who audiences have tired of: Paris Hilton, Lindsay Lohan and the late-Anna Nicole Smith's lover Howard K. Stern. And while overexposure may have less to do with the precise number of headlines than it does the public’s perception of the celebrity, the 15 stars on our list have proved that familiarity can, and does, breed contempt.

Australian pop star, Kylie Mingoue, may have found love in director, Alexander Dahm, but her friends say that the singer is lonely and worryingly near burn-out.

A source close to the singer said that when Kylie is away from the crowd, she seems to be a person, who is alone and tired.

"In her quiet moments, when she is away from the crowds and the cameras which follow her everywhere, we're seeing an altogether different Kylie these days. She is rather tired and rather lonely," the Daily Mail quoted the friend, as saying.

The source added that the singer is just good friends with Dahm, who is a married man, and that their relationship would have been different if he was single.

"And while she is genuinely just good friends with Alexander, there is no denying that she would feel entirely different if he was a single man," the friend said.

The confidante also said that although the 38-year-old wants to share her life with someone, she can’t bring herself to trust anyone after the way her former beau, actor Olivier Martinez treated her.

"The fact is that Kylie's desperate to find someone to share her life with, but after the way Olivier treated her she just can't bring herself to trust anyone," the source added.

The friend also said that Kylie is now concentrating on looking good, and ensuring that the ageing process doesn't show.

"She hasn't really got anything else in her life, so she's obsessing about her image and making sure the ageing process doesn't catch up with her," the source said.