Astrology tattoos are very popular because it is both a very personal indication of individuality and also a way to identify with other people who have the same sign or amicable signs. It connects us with an ancient time and how they understood the human existence with the physical universe. Astrology signs are popular among men and women. They can be large or small, simple or complex. Astrology tattoos are great for any part of the body. To find out what your astrological sign is, you just need to look up your birthday.