This Sunday, Downton Abbey returns to PBS for a fourth season. And while the Brits have flooded the Internet with spoilers, the only thing we're willing to reveal is this: '20s beauty has taken over the estate. From flapper hairstyles to rouge pots, the women are leaving the Edwardian era behind for a more modern look. It all started with the arrival of Mary's curling contraption last season, but now you can expect to see everyone with cropped cuts and formfitting fashion (except the Dowager Countess, of course). And perhaps you'll get to see what a '20s wedding looks like when you tune in . . .