Everyone loves a good show tune, but sometimes when it comes to musical theater, what we really obsess over are the costumes. To unveil our newest feature, Quick Change—a photo feature of actors modeling their show ensembles paired with commentary, we asked Shannon Mullen of the national tour of Rock of Ages to showcase her '80s glam. Click on the photo gallery below to see Mullen strut her stuff in her L.A. duds as Sherrie, a small-town girl who moves to Hollywood in search of her dream. Find out which outfit is her favorite, the one that makes her feel the sexiest and which costume she needs to slip into in under 30 seconds. Check out the rock ‘n’ roll looks, then get tickets to see Rock of Ages, which plays Austin’s Long Center from October 25 through October 30.