This paper toy is a chibi Ukraine (Katyusha Braginskaya), the older sister of Russia with a large heart and chest, and a supporting character in the manga / anime Hetalia: Axis Powers, the papercraft was created by smilerobinson.
Ukraine is constantly in a state of crisis, and is very poor and unable to pay Russia for gas. In addition, she is compelled to apologize for everything, even for having a female boss. In the anime, her chest bouncing is further exaggerated by loud sound effects that follow her wherever she goes. In her and Belarus's song 'Carrot and Stick' it is implied that Ukraine, like her younger sister Belarus, holds romantic feelings for Russia, though she is less outspoken of them. Though unconfirmed, Himaruya has stated that he liked the following fan-suggested names for Ukraine: Irunya Chernenko, Maria, and Sofia. [Source: wikia]
You can download the paper craft toy here: Hetalia: Axis Powers - Chibi Ukraine (Katyusha Braginskaya) Free Paper Toy Download