A butterfly tattoo is a popular design for women and girls alike. They can add a feminine touch to any design. Butterfly tattoos are so popular that there is even a special name for butterfly tattoos: butterflies. Butterfly tattoos are very popular in the United States, especially in the western region. The butterflies are a free-spirited symbol of life. Butterflies represent joy, happiness freedom, and a new beginning. But most of all, they stand for optimism and hope.