The singer acquired his first piece of ink — a tiny seagull on his hip — at the tender age of 16. Since then, he's amassed more body art than your average member of the Hells Angels — each one with its own special, and sometimes spiritual, meaning. But unless you're very familiar with his Calvin Klein underwear ads or relentlessly stalk his Instagram feed, it's easy to lose track of his laundry list of tattoos.
So in honor of him turning the big 2-4 today, and because we may never know if Gomez is throwing the "Sorry" singer a surprise birthday bash, we've mapped out the best of Bieber's ink for your viewing pleasure, ahead. Time to put on your party (and probably drop-crotch) pants.