For girls a hip tattoo shows total confidence in her body. These types of chicks and very alpha and know what they want and aren't afraid to tell you. Getting your hip done is committing to something serious.
Hips can be a painful place to get inked and the decision doesn't come lightly. The hip makes up 10% of the total canvas and is generally not the first place a woman will get a tattoo. Design options can be somewhat limited here as the image needs to move with the curvature of the body. Talk to your artist and see what type of design he or she is comfortable with doing.
Hip tattoos are an exciting and sensual, and are also easily covered and concealed. Shown only to those close to you feel free to experiment in this area and have fun.