Ah, they grow up so fast.

17-year-old pop sensation Justin Bieber was spotted shirtless in Hawaii with girlfriend Selena Gomez, where he showed off some new ink on his left side.

Bieber's new tattoo reportedly reads "Jesus" in Hebrew, according to Hollywood Life, and marks his second tattoo to date. (His first is the outline of a seagull on his hip.)

Check out Bieber's tattoo in the video below.

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