Madonna's official web site has just added another date to the Sticky & Sweet Tour itinerary. M will perform in Buenos Aires (Argentina) at Estadio River Plate also on December 4th 2008.

This makes the gig on December 4th also the opening night of the S&S Tour in South America, where all shows, that went on sale until today, have been sold out.

Source: Madonna.com
Thanks to LuLa86!