After getting their faces melted by all the badass tunes in '80s metal musical Rock of Ages, the show’s July 26 audience got a very special post-show treat: a performance from real-life '80s pop princess Tiffany. The red-headed siren, who skyrocketed to teeny-bopper fame via mall tours and singles like "Could’ve Been," took over the stage of the Helen Hayes Theatre to jam on her 1987 hit, "I Think We’re Alone Now." After she brought the house down, Tiffany posed for photos with some of her biggest fans, the Rock of Ages cast. Click on for a front row seat at this ‘80s-stravaganza.