We've all done things that we later come to regret, but the worst are the ones we can't forget. Unfortunately for these celebs, that regret comes in the form of permanent ink: tattoos!
There's a case to be made that you shouldn't wear your heart on your sleeve. I mean, imagine looking down at your wrist and every time seeing the initials of your ex-boyfriend staring back at you. That's what happened to actress Malin Ackerman and a surprising number of other high-profile stars!
Check out the gallery of stars who clearly weren't thinking when they requested these unfortunate tattoos.
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