This is the first study to explore the issues and decisions that lesbians residing in Germany face when striving to create a family by donor insemination. Using a self-constructed questionnaire, information pertaining to the first phases of lesbian family formation (coming-out, lesbian relationship, and decision-making) was collected from 105 lesbian mothers. The participants in this sample demonstrated a strong sense of lesbian identity, were in committed relationships, had taken part in lengthy deliberations about general and lesbian-specific aspects of parenting, and had aspirations of equal parenting which were reflected in their choice of terms for identifying themselves as mothers. Potential advantages for children included wantedness and diversity in up-bringing. Coping strategies for possible discrimination of children included valuing diversity, maintaining open communication, instilling pride, normalizing, and buffering. Maternal role allocation was based on desire to experience pregnancy. Plans for male involvement in children's lives had been made. Women generally experienced support for plans to parent. Co-mothers looked forward to becoming mothers but were sensitized to the consequences of legal and biological asymmetrical parenting. The choice of anonymous, identity-release, or known donor was related to attitudes towards biological fathers/donor issues and availability. The impact of German legislation regarding same sex marriage and lesbian access to reproductive services on family formation is discussed.