If you want the full version and license for commercial use,
you can purchase here :

https://staircaselab.com/product/bella-regina/

File include : 

1. Bella Regina.otf
2. Bella Regina.ttf
3. Bella Regina.woff
4. Bella Regina Due.otf
5. Bella Regina Due.ttf
6. Bella Regina Due.woff
7. Bella Regina Due Italic.otf
8. Bella Regina Due Italic.ttf
9. Bella Regina Due Italic.woff
10. Bella Regina Italic.otf
11. Bella Regina Italic.ttf
12. Bella Regina Italic.woff