matryoshka is really catchy x_x[link]
did this 2 days ago but i was lazy to upload it :T
Miku and GUMI (c) whatever company that made them :T
fyi~ матрёшка // Matryoshka
A matryoshka doll, also known as a Russian nesting doll or a babushka doll, is a set of dolls of decreasing sizes placed one inside the other. The word matryoshka (Russian: матрёшка) is derived from the Russian female first name Matryona (Russian: Матрёна). The word babushka (Russian: бабушка) is the Russian word for grandmother.