1) Germany has no problem with dual/mulitiple nationalities when aquired at birth (just like with your daughter, she can keep them all) 2) Germany does allow multiple citizenship in certain case, it's in section 12 of the nationality act: http://www.bmi.bund.de/SharedDocs/Gesetzestexte/EN ...

Would it be possible for me to become a German citizen without loose any of the 2 passports that I current hold? Brazilian and English? Keeping the British passport is no problem since Germany doesn't require EU-Nationals to renounce their citizenship. Brazilian citizenship shouldn't be a problem ...