Rihanna will now be waving thug life every time she passes by after a visit to a famous tattoo parlor in Hollywood yesterday. The singer tweeted a mean mug shot honoring the late great Tupac Shakur with a new pink tattoo that reads “THUG LIFE” across her knuckles. The 23-year-old graced Mark Mahoney’s Shamrock Social Club for some new ink and shared a series of fun-loving pictures on Twitter with the tattoo pioneer himself. Ri-Ri even ran into actor Danny Trejo and was able to snap a scantily clad shot with him too. Mark Mahoney began the art of tattooing before it was legal and has since inked up the biggest names in Hollywood including Angelina Jolie, Johnny Depp and the Notorious BIG himself. Rihanna makes her movie debut in Universal Pictures’ Battleship, opening in theaters May 18, 2012.