Tattoo is her cloth, nothing else

Really there are any kind of person in China. This slim girl is so sexy (I can't say she is a pretty girl, as no face shown, so can only say she is slim from her waist line), her back is bare with just tatoo, and nothing else. See everyone on the other side of the escalator, all eye on her. Her tattoo is so colorful, but I guess must be pain when paint it. Well, in return, she gets all the attention she wants.
Got another way, her tattoo pattern is well matched to her bikini. Same flower.

But clothes you can change everyday, tattoo cannot change. Unless is temporary kind. But what if rain?