Rock-and-roll loves fashion and fashion loves rock-and-roll. After all, true rock royalty like Mick Jagger, Steven Tyler, Chris Robinson, and Joan Jett sport head-turning, hip-shaking, mouth-dropping looks year after year. Thank goodness designers periodically pick and choose rocker elements to translate into mainstream fashion. At Saks Fifth Avenue (Prudential Center, 800 Boylston Street, Boston, 617.262.8500), you'll find a plethora of rock-inspired pieces from the likes of Roberto Cavalli, Dolce & Gabbana, and Jimmy Choo. Or rock it out hipster-style with a Mason gold lamé dress ($450), available at Parlor (1248 Washington Street, 617.521.9005). As always, Stil (170 Newbury Street, 617.859.7845) delivers the Northern European take on each and every worthy trend, including lines from NOIR and Camilla Staerk. For a more understated option, incorporate a piece of rocker-inspired Catherine M. Zadeh jewelry into your look; find the line at Persona Jewelry (504 Comm Ave, Boston, 617.266.3003).