A popular tattoo placement for Girl Tattoo's have been on the back, specifically the lower back. Here are some girl back tattoo ideas and tips that would work well for that area.
1. Flowers, butterflies, or dragons! These range from the pretty to the dangerous. Whatever your personal tastes are, some popular choices for lower back tattoos have been flowers symbolizing feminine qualities, a butterfly symbolizing intricate beauty, or a dragon symbolizing strength and danger. All work well on the lower back and because of the large area they can be intricately inked on for detail.
2. Large vs Small Back tattoo. I bring this up because I've noticed many girls whom after getting their tattoo, express a regret of not having got it bigger! Usually people go in to a parlor relatively conservative and are fearful that their tattoo will be too big. But when all is said and done, many reflect and realize a bigger design would have been more preferable. And this often seems the case with girl back tattoo's. Remember that there is a decent amount of surface to work with, and getting a tiny tattoo is probably not going to look that great, and could even resemble a blemish if it's not big enough too actually fully notice.
3. A mural girl back tattoo. Some of the sexiest tattoo's I've seen have been murals, or mini murals. This is where a combination of designs are infused into one large design, so for instance a combination of flowers with butterflies could make up a nice idea. You could also start out with just one design and make it into more of a mural as time goes on.