ABBA-rific musical Mamma Mia! proved just how international a hit it really is on March 3, when the headliners of the Brazilian production stopped by to visit their friends on Broadway. During a visit to New York, these South American stars spent an evening checking out the show at the Winter Garden Theatre, then stormed the aisles to dance their way through the finale. After the show, they went backstage to meet their Broadway counterparts. Click through to check out this meeting of the Mamma Mias!