Article Photos: Lady Gaga tweets some racy images before concert 3/8

  Lady Gaga fans stand outside, waiting to enter 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)