Here is Monica Bellucci bust 3D model ready for 3D printing. The model current size is 5 cm height, but you are free to scale it. Zip file contains obj and stl. The model was created in ZBrush.
If you want the version with texture it is available here: https://www.cgtrader.com/3d-print-models/miniatures/figurines/monica-bellucci-bust-ready-for-full-color-3d-printing
If you have any questions please don't hesitate to contact me. I will respond you ASAP. I encourage you to check my other celebrity 3D models.