This season had been a lot about Sally’s coming of age, and in this episode we see her wardrobe oscillate from little girl to young adult.
She’s first seen preparing her brothers for the weekend at Don’s, wearing a pink tank with a clearly padded bra underneath and an orange micro-mini skirt. Whoa. Betty is not pleased with this outfit at all, and makes a comment about Sally looking like she’s a hooker.
Later in the Draper’s apartment she’s in a white peasant blouse that looks a bit younger, and when the break-in occurs she’s in pink pajamas that are very childish. When Don calls Sally to apologize, she wears a yellow nightie, that though still girly, is a bit more grown up.