Girl at the Bar
A little Jane, a little Betty-in-Italy, this look is over-the-top. The color white is defnitely a reference to marriage, as in Don’s crumbling one, and the girl even bears a resemblance to Megan.

The AMC website calls the look Don gives her friend at the bar–the last shot of the season–”a blank stare,” but something tells me Don has something more on his mind.