This paper toy is Momoka Ariyasu (Z Densetsu Ver.), a female idol from Japanese idol group Momoiro Clover Z (Momoclo), the papercraft is created by Buster_You. There is also a Robo Version Paper Toy available.
You can download the papercraft toy here: Momoiro Clover Z - Momoka Ariyasu (Z Densetsu Ver.) Free Paper Toy Download