Jennifer Aniston’s personal style is classic and sophisticated, and yet when it comes to her hair, she’s consistently ahead of trends. She made the shoulder-length Friends shag famous, sported dreadlocks on the red carpet with Brad Pitt, and has since experimented with a number of pin-straight and wavy styles. In real life, it’s nearly impossible to keep up with Jen without a personal stylist at your beck and call. However, you can steal her signature style by keeping your hair long, sexy and carefree. Sunny highlights should appear glossy, never brassy.