Sayyidah Aishah (may Allah be pleased with her) said: The hair of a woman of the Ansar fell out, and she wished to have hair attached. This was mentioned to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) "cursed both the woman who attaches hair and the woman who has it attached."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4227