We talked a lot about how to style Margot in that, uh, she as a victim of terrible terrible abuse would probably have some sort of armor like aesthetic to her wardrobe. So high collars, sharp shoulders [to show] that she is a in perpetual state of defense. - Su-zakana audio commentary

+ bonus:

Margot wearing loose, revealing clothes around Alana.

Hannibal 3x13 - “The Wrath of the Lamb”

head slapping moment when i realise that the way alana and margot's dressing styles begin changing to reflect the other in s3 is about how they're "blurring" as well.

in the commentary bryan fuller said margot's choice in fashion was a form of self protection from a life of trauma - high collars, spikes, harsh outlines and updos. while the alana in s1 who was still emotionally open and gentle, preferred to wear wrap dresses.

alana begins to dress like margot after her traumatic ordeal in mizumono and becomes more ruthless and self involved, and margot begins to dress like alana because she doesn't feel she has to be on guard at all times - she's found someone who she can share her burdens with.

#rude

HANNIBAL - 3.04 - APERITIVO