Closer up:
And here is a picture of the tattoo unfinished:
Update:
@tim_herrera has cleared up the "who" of the tattoo mystery:
Me thinks not because well...why would he ever do that?? Oh wait...There is a similarity between the tattoo and Rihanna but TMZ reports that it's "just a random woman."
Update:
@tim_herrera has cleared up the "who" of the tattoo mystery: