With so many more silhouettes at your disposal, why not have a little fun with picking out your fall wedding guest dress? Narrowing it down to just one (or two, or three) of the best fall wedding guest dresses is a task ideally guided by your event’s venue. For a city affair, a seasonal, longer version of a little black dress is always appropriate; The Row’s strapless column dress is a timeless option, while J.Crew and Khaite offer elegant lengths for a cocktail reception.