The upper thigh. Short skirts have always been attractive and sexy. Much is due to that upper thigh area. As soon as you travel six inches or more above the knee, you are in uncharted erotic grounds. So it makes sense that a tattoo already has the advantage of landing on erotic ground, and it will be a sexy addition to a female body.
The feet. Yes the feet can be a very sexy place for a tattoo to be placed. Women spend an enormous amount of time accentuating their feet through owning enormous pairs of sexy shoes and having their toes pedicured and painted. So another permanent addition to dressing their feet up can be a sexy foot tattoo.
The upper arm. There's something to be said about upper arm tattoo placement on a female. Wearing a tight t-shirt with a tattoo peaking out from one of the sleeves can be very sexy and alluring. It's a classic place for tattoo placement, yes, but still an upper arm tattoo can be very attractive looking.
The lower back. Although the low center back tattoo has become somewhat of a trend and likely has been overdone with many females jumping on the bandwagon to get a tattoo placed there, it still can be a sexy place for a tattoo. Many males have been turned on by the low back tattoo, due to a vivid imagination of a certain sexual position while being in full view of the tattoo. So the low center back still remains a sexy place for a tattoo!