Matryoshka Vocaloids

This image depicts two women dressed in vibrant costumes, likely for a cosplay event or convention. The woman on the left has long, flowing blue hair styled in pigtails and wears a green jacket with white trim. Her counterpart on the right sports red hair tied up in a ponytail and dons a blue hoodie featuring an oversized design of a character's face. Both individuals are adorned with black dots painted on their cheeks, adding to their elaborate costumes. The background is blurred but appears to be a large room or hall filled with people, suggesting that this photo was taken during a crowded event such as Anime Expo or Comic-Con.