Stars, like it or not, are everywhere, and the right one can be an excellent brand-booster.

In 1961, social historian Daniel Boorstin wrote, "The celebrity is a person who is well-known for his well-knownness." Those words resonate stronger than ever today, as PR pros tap into America's obsession with stars to garner media coverage and credibility on behalf of clients.

"It's necessary for brands to incorporate relevant celebrities into their PR campaigns to stay current and 'cool' in consumers' eyes," says ...