Martina McBride

Sara Evans, Taylor Swift, and Martina McBride are doing something for DoSomething.org. The country stars have donated bags and other memorabilia to a fundraising auction for the organization, which promotes volunteerism. Evans is contributing a signed, white leather handbag and a photograph.

-- Today through June 6, fans can bid on personal items donated by -- Today through June 6, fans can bid on personal items donated by more than 50 famous musicians, actors and athletes at www.jetblue.com/celebritybaggage (a), with 100% of proceeds benefitting DoSomething.org --

-- Fans can also enter for a chance to win a bag on JetBlue's Facebook page (b), where the airline will donate an additional $1 per sweepstakes entry to help raise money for America's youth, up to $25,000 (c) --