Rarity.

Sexy, alluring, a slight hint of vibrant sexuality yet innocent.

the right hand twirling hair: carefree spirit
the left hand on hip with tense muscle: strong willed
a lot of mix signals.

bent knee is better shot from a profile, here it covers the other leg.

facial wise, very seductive.

the brick wall takes the viewer's eye away from the model (too much "noise")

the dress, simple but sexy. very nice contrast.

camera was turned slightly, makes figure slanted on angle with your hair seems to defy gravity.

model over all looks tensed, not natural.

lighting looks natural (not too many light source)

Awesome cosplay. Very well done.