1 definition by Sarah Martin
Two or more females who click on every level imaginable; who can talk about EVERYTHING from gorgeous foreign boys (or lack there of) to existentialism. Who reminisce, learn, dance, sing, complain, celebrate, play and dream together. Who will forever believe that they were born together and somehow separated at birth only to be brought together by fate at a later date in their lives. Where small talk doesn't exist and it's all about BIG talk. Soulsisters are forever yin and yang. From the very first breath to the very last.
Sucks-for-you, Bianca's MY soulsister.
by Sarah Martin January 16, 2005