Britney Spears is joining the effort to help those affected by the devastating earthquake and tsunami that struck Japan two weeks ago. The 'Femme Fatale' is auctioning off a pair of VIP passes to her live show in San Francisco on March 27.

The concert is actually a free event for 'Good Morning America' that was initially supposed to be held at the outdoor Castro Theater. But due to the potential for bad weather, the show will now take place at the Bill Graham Civic Auditorium. The show will still be free, but its new location indoors means tickets will be required for entrance into the limited capacity venue. Tickets go on sale tomorrow at 10:30AM EST on the 'GMA' website.