Hey…Gals! Cool and sweet matching tattoos are not only reserved for couples, also a great way of showing close bond between sisters and friends! a best friend or sister who can share your happiness and sorrow together and always behind you . a matching sister tattoo is a great way to express your love to your sister or best friends. Do you and your sister or friends have some matching tattoos ? To get a matching tattoo with your best friend, to prove to everyone that your friendship is bound to last forever. Following are some cool sister tattoo design ideas for you, hope you’ll get inspiration from following pics.