Rihanna got it tatted so we know it's real... "Thug Life" is the most recent addition to her collection of tattoos.

This week Rihanna visited a tattoo shop in L.A. to get "Thug Life" tatted on her knuckles. She tweeted later, “All these bitches screaming that 2pac back ♫ #THUGLIFE."

This morning, reflecting on her tattoo she tweeted, "I'm thinking I shoulda got a tear drop instead!!! #THUGLIFE maybe next time."  I guess we'll just have to wait and see!

Check a photo of her & and her knuckles below.