A noodle stopper featuring Vocaloid Hatsune Miku with a nemophila theme, one of many designs in the FuRyu line of Hatsune Miku noodle stoppers and particularly one of the Flower Fairies.
This design was illustrated by Sogawa and features Miku in a white leotard with white pantyhose. Her hair and clothing are adorned with nemophila flowers.
Official art: post #5896145
Other figures in the Flower Fairy line:
This tag implicates hatsune_miku (learn more).