Failed pop stars
Failed pop stars. "American Idol" reject Pia Toscano is in talks to release a new album after being booted from the talent show. Her foray into pop stardom will probably fare better than these non-musical celebs, who couldn't resist attempting a pop career -- often to ear-splitting effect.

Kim Kardashian
Socialite daughter of a fallen football star's celebrity lawyer
Kevin Federline
Ex-husband and father to the children of a legitimate pop superstar.
Heidi Montag
Plastic surgery fan and wife of Spencer Pratt.
Lindsay Lohan
Former child star struggling through mug shots and rehab to build adult career
Kelly Osbourne
Once-chubby daughter of famous rocker transitions into svelte style icon
Oscar De La Hoya
Boxer who scored an Olympic gold medal and a lucrative career
Kim Zolciak
Blond and brassy reality-TV personality, currently with child
Tyra Banks
Former Sports Illustrated swimsuit model and former talk show host
Hayden Panettiere
Actress who played pivotal character on TV's "Heroes"
Deion Sanders
Versatile athlete who played in the NFL and another pro sport
Jennifer Love Hewitt
Starred on TV's "Party of Five" and "Ghost Whisperer"
Danielle Staub
Member of "The Real Housewives of New Jersey" who sparked famous table-flipping
Brian Austin Green
Supermodel with fierce beauty and even fiercer temper
Naomi Campbell
Now married to a "Transformers" starlet, Green grew up on "Beverly Hills, 90210"
Paris Hilton
Hilton starred on "The Simple Life" with then-BFF Nicole Richie.