Lesson: Every common Cathy wears a trench coat; a proper girl wears hers with a full skirt and a smile.
Get the look: Asos trench, $128.

Lesson: Corsets are devices of prostitutes and call girls. The truly refined cinch their waists with paper bag trousers.
Get the look: BB Dakota Zachary belted pants, $80.

Lesson: During cold months, a lady should never be caught outdoors without long gloves.
Get the look: 3.1 Phillip Lim Bianca slip-on carriage gloves, $350.

Lesson: A lady’s secret to appearing pulled together: matching separates.
Get the look: Beyond the Valley cropped tweed jacket, $237, and tweed miniskirt, $108.

Lesson: Shins fare better behind a duster coat.
Get the look: BB Dakota Dedrick long overcoat, $145.

Lesson: A bow near the lips keeps eyes off the hips.
Get the look: Tibi silk tie-neck bodysuit, $275.

Lesson: When floor-length gowns feel too constricting, good girls opt for light, breezy midiskirts.
Get the look: Oonagh by Nanette Lepore Rex pencil skirt, $198.

Lesson: Although suspenders were once considered a male accessory, the fairer sex has perfected the look.
Get the look: Trafalgar Formal Concord suspenders, $80.

Lesson: A long-sleeve blouse is a no-brainer, but only a lady would think to tie hers up with a bow.
Get the look: Joseph Solferino blouse, $335; Topshop velvet bow collar, $20.

Lesson: The fancier the lady, the bigger the peplum.
Get the look: Alice + Olivia Victoria peplum dress, $264.