Forward-thinking girls have been ditching their darks for neons so bright they require a pair of Ray-Bans — Wayfarers of course. Louis Vuitton, Proenza Schouler and Karen Walker all showed vibrant hues on the runways for fall, but Reese Witherspoon took the trend to the red carpet when she showed off her post-divorce bod in a slim-fitting, shocking yellow Nina Ricci frock at the Golden Globes. Later at the Oscars, Jessica Biel followed suit, opting for a hot pink Oscar de la Renta gown, and eventually the look caught on among the social set. Scenesters Chloë Sevigny, Lauren Davis and Camilla Belle all called on designers like Oscar de la Renta and Luella Bartley to help them avoid looking like they love the Eighties just a tad too much. In neons like these, nobody will put Baby in the corner.