The 18-year-old 'Boyfriend' singer's latest body art features Pattie's birth date of April 2, 1975 inked in roman numerals on the upper right of his chest, reported Daily Mail online.
Bieber is seen topless while wearing dark shades as a tattoo artist works on the design in one picture posted on Twitter, which is the latest of several tattoos the 'As Long As You Love Me' already has on his body.
Earlier this month, Bieber also got another tattoo when he had the logo for the Stratford Cullitons inked onto his left shoulder blade, believed to be in tribute to his grandfather.
His other tattoos include the word 'Believe' inked across his left arm, the image of Jesus Christ on his left calf and the Japanese Kanji symbol for music on his right arm.