Marrying a girl while his brother has been breastfed with her sister

Q: My youngest brother and one of our neighbor's daughters are foster siblings. Can I marry any of her sisters? I appreciate your guidance, may Allah bless you.

A: If the case is as you describe, it is permissible for you to marry any of her sisters.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.