Lady Gaga tweets some racy images before concert - Article Photos 6/8

Lady Gaga fans gather outside the stadium where the U.S. pop star will perform a concert, in Buenos Aires, Argentina, Friday, Nov. 16, 2012. The Latin American leg of her, "Born This Way Ball Tour," is coming to an end but not before stopping in Chile, Peru and Paraguay,. (AP Photo/Natacha Pisarenko)