Justin Bieber Goes Shirtless For New Tattoo Pics ... Again

Justin Bieber, 18, seems to have started using his Twitter account as a platform for promoting his ever-evolving tattoo status. After now tweeting three pictures of his tattoos in about as many months, plus appearing on David Letterman to talk about one, where the veteran Late Show host tried to jokingly rub the ink off his young guest before realizing how painful that can be, Bieber's at it again, proving that he's man enough to be both inked and shirtless on frequent occasions.

^{Twitter, Justin Bieber}

Okay, so the latest shot of the Biebs actually shows a tattoo we're already familiar with — the crown beneath his left collarbone, but his pose is different and oh-so-artistic, with the dim yellow light behind him shrouding his face in shadow and only highlighting the part of his shoulder that reveals the (still pretty unclear) tattoo.

Even more mysterious than all that? Bieber posted the picture ... wait for it ... with no caption!

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