"O people, the Prophet [SAW] forbade you to give false impressions. He brought a piece of black cloth and threw it in front of them and said: 'This is what women are putting on their heads and covering it.'"  

أَنَّهُ قَالَ يَا أَيُّهَا النَّاسُ إِنَّ النَّبِيَّ ﷺ نَهَاكُمْ عَنِ الزُّورِ قَالَ وَجَاءَ بِخِرْقَةٍ سَوْدَاءَ فَأَلْقَاهَا بَيْنَ أَيْدِيهِمْ فَقَالَ هُوَ هَذَا تَجْعَلُهُ الْمَرْأَةُ فِي رَأْسِهَا ثُمَّ تَخْتَمِرُ عَلَيْهِ  

The Messenger of Allah [SAW] forbade giving a false impression, and the false impression of a woman when she adds extra hair to her head.  

أَنَّ رَسُولَ اللَّهِ ﷺ نَهَى عَنِ الزُّورِ وَالزُّورُ الْمَرْأَةُ تَلِفُّ عَلَى رَأْسِهَا