InStyle's January issue just hit newsstands, with the glamorous Jennifer Garner on the cover! We added Garner's cover hairstyle to our Hollywood Makeover Tool, so now you can see yourself in the star's lush layers. Simply upload your photo to try on the style -- no trip to the salon required! Plus, you can show off your new look on Facebook and Twitter to see what all of your friends think. Head over to the Hollywood Makeover Tool to get started now!