MUHAMMAD DOGMATISES THAT A MAN OR WOMAN IS SIMPLY A MAN OR WOMAN

The Prophet (peace and blessings be upon him) declared that a woman should not wear a man's clothing or vice versa. He cursed men who imitate women and women who imitate men -

The evil of such conduct, which affects both the life of the individual and that of the society, is that it constitutes a rebellion against the natural ordering of things. According to this natural order, there are men and there are women, and each of the two sexes has its own distinctive characteristics. However, if men become effeminate and women masculinised, this natural order will be reversed and will disintegrate.

Among those who are cursed by Allah and His Angels, both in this world and in the Hereafter, the Prophet, peace and blessings be on him, has mentioned the man whom Allah has created as male but who becomes effeminate by imitating women, and a woman whom Allah has created as female but who becomes masculinised by imitating men. For this reason the Prophet (peace and blessings be upon him) forbade men from wearing clothes or things pertaining to women.

Yusuf al-Qaradawi from his book, Lawful and the Prohibited in Islam.