It's never fun to get arrested. Well, probably — we wouldn't know. But you would never guess that by these celebs' mugshots!

Perhaps forgetting they're at central booking and not the red carpet, the celebrities we put on this list seem pretty glad to be at a police precinct. It seems a little weird, but a photo-op is a photo-op, so at least they look good, if not a bit maniacal in some cases.

From Justin Bieber's pearly whites to a super smiley Bruno Mars (a personal favorite of ours) to a totally made-up Paris Hilton, these celebrities are clearly camera ready at every turn, no matter the situation.

Below, a gallery of 25 celebrities who smiled for their mugshots.