By Grace Gavilanes
Updated Jan 05, 2015 @ 7:15 am

Happy birthday, January Jones! The blond bombshell, best known for her role as Betty Draper on Mad Men, rings in her 37th year today. Despite starring in the period drama, Jones has kept up a sweet-meets-modern style, complete with polka-dot coat dresses (above center) and on-trend moto jackets -- but, at the same time, isn't afraid to bring her on-screen character to life with a retro look. In honor of her birthday, we're taking a look back at the star's best looks ever, from classic to downright edgy.