Mikuru Asashina (Maid) - The Melancholy of Haruhi Suzumiya

Cosplayer: Kipi
Character: Mikuru Asashina
Anime: Suzumiya Haruhi No Yuutsu (The Melancholy of Haruhi Suzumiya)
Additional: Lovely costume. Extremely cute.
Kipi's facial expressions really resemble Mikuru's.
Reference: http://www.kipi-fan.com/