Sisters share a special bond, and tattoos are one way to make that bond evident to the world. Or not, if you keep your tattoos subtle and not obviously matched. Bored Panda went undercover to gather some of these secret symbols that sisters share, and this list is the result.
Do you and your sister have some tattoos in common? Spill the beans, upload your photos so that we can all see. Or, you can vote on your favorite tattoos below.