Halibel serves as the 3rd high-ranking Espada as Ulquiorra serves as the 4th. They are both quiet in nature, preferring to think before they act.
While Ulquiorra's mask can be readily seen, Halibel's mask is covered by her coat and colar. Her mask extends from her nose down to her breasts.
I didn't want to place this cosplay on either of my other 2 blogs because of the amount of skin being exposed. However, Halibel has never been portrayed so accurately, and Ulquiorra rivals the first cosplayer I featured. Excellent job!