I prefer the hip idea, its where I got my first. And its a lot easier for people to see than you think. Plus as a bonus if you dont want to show it off a long top will cover it right up.
How about one of these?
http://i561.photobucket.com/albums/ss56/random_account83/sofi_tattoo_by_CrazyHorse_gaBO.jpg
http://i561.photobucket.com/albums/ss56/random_account83/pretty_butterfly_by_kimywabbit123.jpg
http://i561.photobucket.com/albums/ss56/random_account83/Butterfly_Tattoo_Design_by_babydeb9.jpg