It might be French to go "f*ck it," put on some lipstick, and go out in your day clothes, but sometimes always, it's fun to dress up. At this precise moment in time, these are the essentials that should make up the part of your wardrobe marked "Strictly for Nighttime Shenanigans."
1 A LBD
Theory Corset Strapless Satin Mini Dress, $395
Sure, it might be common sense to own a LBD, but with the *going out* LBD, the three-finger rule flies out the window. Let it be mini and cinched (corset-style if you want it super-cinched) or strapless if your fashion tape/strapless bra combo is strong.