Troubled singer Rihanna just inked her 16th and 17th tattoos yesterday. She tweeted a pic of fresh tattoos on her fingers that read "THUG LIFE" -- in homage to deceased rapper Tupac Shakur.
But her newest tat on her butt is still a mystery. She hinted that it might be a name -- probably her own. And she also challenged her Stans to tattoo her name on their bodies, just like Drake's crazy Stan did when she had his name tattooed in big block letters on her forehead.