Tattoo Barbie comes with a set of tattoo stickers that can be placed anywhere on the body and a water gun that appears to resemble a tattoo gun.
There is "Butterfly Art Barbie" released in 1999 and now "Totally Stylin’ Tattoo Nikki" (brunette version). Some Parents Not Too Happy With Tattoo Barbie.
Tattoo Barbies on Amazon.com.
These seem pretty harmless. From the items on Amazon.com and this video, you can see the tattoos are hearts, panda bears, daisies and butterflies.
It's not like they've got tramp stamps for Barbie and skull and cross bones and nekkid ladies for Ken.