Spinner.com created a list of hit songs that were originally written for someone else, like Whitney Houston's "How Will I Know" was originally for Janet Jackson.

Britney Spears' "Baby One More Time was for TLC

Kanye West's "Gold Digger" was originally written for Shawnna.

Rihanna's "Umbrella" was originally written for Britney Spears.

Britney Spears' "Toxic" was originally written for Kylie Minogue.

 Kelly Clarkson's "Miss Independent" was originally written for Destiny's Child . . . and Christina Aguilera also passed on it.

Rihanna's "Disturbia" was originally written for Chris Brown.

Check the FULL list at Spinner.com