What I also love of this design is how both versions show a personality of the characters and dual nature of the sisters. Anna is wearing white (purity, a bright color for a joyful person, warm color) which is a opposite to Elsa's black (cold color, more introverted) plus the jacket is spend open like Anna is allowing freedom and a open expression vs her sister's jacket more around and shielding her. Elsa's more modest while Anna more flair and open exposure.

Anna is my favorite of the two (design wise, personality, overall) but I do love both characters. Love the appeal, personality and energy in this picture.