Disco-riffic musical Sister Act is one spangly show, but on May 19 the onstage sequins were rivaled by the backstage star power. First up was Jonathan Groff, golden boy of Spring Awakening and bad boy of Glee, who stopped by to catch up with his sensational co-star from Hair in Central Park, Tony nominee Patina Miller! The evening's star factor went ever higher with the addition of legendary actress Angela Lansbury, who took in the feelgood musical before heading backstage to visit with the talented star and director Jerry Zaks. Click through for photos of these famous faces!