It is important to approach this topic through two points

1. The Islamic Ruling on Male and Female Circumcision; 2. Must one who wants to convert to Islam get circumcised or is it optional?

As for the Islamic ruling on female circumcision and whether it is obligatory, Sheikh Ahmad Kutty, a senior lecturer and an Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, issues the following: “Circumcision for males is considered an important rite of initiation in Islam. It is a part of the legacy of the Prophet Ibrahim, peace and blessings be upon him, whose role model we have been ordered to follow in the Qur’an. It is, therefore, a highly significant rite in Islam.
When we come to the issue of “Female circumcision”, however, the mater is quite different. There is nothing in the sources, either the Qur’an or the Sunnah, to suggest that it is a PRESCRIBED ritual of initiation for women in Islam.
While one finds a number of traditions from the Prophet, peace and blessings be upon him, which clearly indicates that he ordered pagan males who converted to undergo circumcision, it is not stated anywhere that the Prophet, peace and blessings be upon him, ordered any woman who entered Islam to undergo this practice.
Because there is no absolute proof from the sources of Islam prescribing female circumcision, the vast majority of scholars do not include it in the OBLIGATORY rituals of Islam.
It is common knowledge in Islam that if the Prophet, peace and blessings be upon him, had wanted female circumcision to be an integral aspect of religious practice in Islam the same way that male circumcision is, he would have said so clearly. Since he did not do so, we can safely assume it is not a prescribed ritual of Islam.”

As for the second point, we’d like to state that there is no requirement in Islam that one who wants to convert to Islam should get circumcised before embracing it. And if the recently converted is a female, then circumcision for females is not obligatory.