Kelly Clarkson, Carrie Underwood and the rest of the "American Idol" winners will go postal to raise funds for "Idol Gives Back."

Baseball has its trading cards. Now "American Idol" will have its own limited-edition collectable stamps featuring KELLY CLARKSON, RUBEN STUDDARD, FANTASIA, CARRIE UNDERWOOD, TAYLOR HICKS, JORDIN SPARKS and the soon-to-be named winner of season seven.

On last night's "Idol Gives Back," host RYAN SEACREST announced that "American Idol" winners will be featured on postage stamps with the net proceeds from the sales of the stamps, created by created by PhotoStamps.com, donated to "Idol Gives Back."

Only 104,000 -- 2000 sheets for each of the 50 states in the U.S. -- will be issued weekly. This week, the stamp featuring Kelly Clarkson is available at americanidol.com or PhotoStamps.com.

Then each Tuesday for the next six weeks, a different "American Idol" will be featured. The stamps are real, first-class postage (42 cents) -- and each sheet of 20 stamps will sell for $19.99.