Express the special bond with your 'unbiological sister' with this stylish graphic t-shirt. The design features the phrase "Unbiological Sister" adorned with vibrant sunflowers and a butterfly. Below, a definition of the term is printed, describing the unique connection. Made from a comfortable black fabric, this tee is perfect for casual wear and makes a thoughtful gift for that extraordinary woman in your life. Show off your cherished friendship and let everyone know how much she means to you with this heartfelt and fashionable t-shirt.