#4 – Sinead O’Connor
Never one to shy away from controversy, Sinead O’Connor spent years standing out from the other women in music not just because of her work and her outspoken views on prominent causes, but also because of her appearance. When she was first rising to stardom, record execs pressured her to look pretty and feminine, and asked her to grow her hair long. She responded by going to a barber and shaving it all off. Shaven heads on ladies may not be particularly controversial now, (although they are still rare) but controversy has nothing to do with the Nothing Compares 2 U singer’s decision to remain bald: apparently she just doesn’t feel like herself with hair, and is often mistaken for Enya. However her hair looked, she certainly wouldn’t be as instantly recognisable without her shaved head.