Rihanna Gets Tupac Thug Life Tribute Knuckle Tattoo - Picture

Rihanna has added to her extensive tattoo collection by tattooing 'Thug Life' on her knuckles.

The singer posted a picture over Twitter of her Tupac inspired pink inked knuckle tattoo:

'♫ All these bitches screaming that 2pac back ♫ #THUGLIFE.'

She later added: 'Tat my f*ckin name on u girl so I know its real!!! #MINE'

Tupac was murdered in 1996, after he was shot four times during a drive-by killing.

Rihanna's other tattoos include stars on the back of her neck, a star on her ear, a hand gun on her ribcage and the phrase 'Always a failure, Always a lesson' across her chest.

Meanwhile, Rihanna has become the most-viewed female musician on YouTube.

The singer has now passed 2 billion views on the site beating Lady Gaga thanks to the video for latest single 'We Found Love'.

Lady Gaga first reached the 1 billion milestone last year following the popularity of  the 'Bad Romance' video, which currently has over 443m views.

Tattooed Music Stars