As titles suggest..  We haven't got any tan lines Now I'll say that personally I tan naked everyday so it's impossible for me to have tan lines haha but would be cool to have the option to have tan lines..  Also many easy ways to create them 1 can be a tattoo that you could color so tan lines would be usable for all skin colors 2 bake ambient occlusion map while in bikini n texture paint tan lines...  Lots of other ways to do it...