No, she isn't dressed as K'lzik. Shes cosplaying Rachnera Arachnera from the anime Monster Musume (everyday life with monster girls) which I reccomend for solo viewing. http://myanimelist.net/anime/30307/Monster_Musume_no_Iru_Nichijou https://en.wikipedia.org/wiki/List_of_Monster_Musume_characters#Rachnera_.22Rachnee.22_Arachnera