Taylor Swift, Carrie Underwood and a myriad of music's biggest acts have joined forces with WhyHunger, donating one-of-a-kind items for the organization's annual Hungerthon Auction. The goodwill effort has set a goal to raise $850,000 in hopes of combating poverty and hunger around the globe.

Jason Aldean, Willie Nelson, Jerrod Niemann, Kix Brooks, Kelly Clarkson and Lee Brice are also among the growing list of gracious country music acts who have signed guitars, CDs, posters and sports memorabilia for the charitable campaign. The auction, now underway, expects more items to be added in the coming weeks.

Bidding for current items ends Dec. 13.

Co-founded in 1976 by the late musician Harry Chapin, WhyHunger has raised more than $30 million to help hungry individuals around the world receive food and water. 2011 was a banner year for the organization, raising $764,000 with the help of highly-prized items donated by Katy Perry, Bruce Springsteen and many more.

Fans hoping to snag some prized possessions from their favorite music acts can head to the auction's official website to begin the bidding war!