Police are investigating a New York City tattoo parlor, East Side Ink, because Rihanna decided she wanted to play tattoo artist earlier this week.

Wednesday night, three lucky people at East Side Ink got brand-new tattoos inked by the "Umbrella" singer herself. This is apparently illegal.

"She came by to hang out with us and her regular tattoo artist, Bang Bang," says East Side Ink owner Yadira. "He decided he wanted to get a tattoo from her and then two of the other artists decided they wanted to get one as well."

RiRi gave her buddy and the other artists one of her signature signs.

"She tattooed us for a change," says Yadira. "It's a little umbrella with a capital R. The second and third had a number two and a number three next to it."

But the NYC Health Department says tattooing without a license is illegal.

Will Rihanna be involved in more legal drama?

"Only licensed tattoo artists can administer tattoos in the city according to the City's Health Code," says NYC Health Dept. spokesperson Erin Brady.

Yadria counters it's only illegal if she is making a profit.

And as for Rihanna facing legal drama, an NYPD spokeswoman acknowledged that "Someone would have to make a complaint. There's been none."

Who would really complain? And would any minor legal matter faze her after getting her face flattened by Chris Brown earlier this year? Doubtful.