Sode no Shirayuki is the zanpakuto spirit belonging to Rukia Kuchiki, during the Zanpakuto Materialisation arc, we saw many great Zanpakuto’s come to life, of which Sode no Shirayuki was one of those. She was pure white and had the ability to freeze anything in her power in an instance. Check this fantastic cosplay of her character, it’s fantastic.
If you like the cosplayer go ahead and check out Faiko2011 who has a number of great cosplay from other anime, I highly suggest you checking her out. On top of which, if you like the page, I suggest sharing with other fans of the show.