Hip or lower back - I think are both sexy places to get one.
A friend of mine got one on her hip a few years back. It's just heart with a small butterfly landing on the top of it. Looks awesome!
Another friend of mine lost her baby - she asked me a couple months ago to draw her a rose with her sons name on it somewhere. So I did but was afraid it might be too big. Ended up just what she wanted.
Still as for me - I prefer small ones. Doesn't mean I don't like them big - it means I like them big on other people. Not me.