Lalita or Tripurasundari is the 16th day or full moon, with her 15 digits. Lalita is usually depicted as slightly red in colour (as that of the dawn) and extraordinarily beautiful. In her four hands she is holding a bow of sugarcane, arrows, the goad (Ankusa) and the noose (pasa). Sometimes she is shown holding a wine cup made of diamond. One of her feet, usually the left, is shown resting on a pedestal is also of diamond. http://www.webindia123.com/religion/hinduism/gods/parvati.htm
Just as Shiva is worshiped in the form of Linga, his consort Shakti is worshipped in the form of Sri Chakra. The divine mother Lalita Thripurasundari is said to be in the mid peak of mount meru; also in the Bindhu, the central circle of bliss in Sri Chakra. She is said to be in the form of Pachadasakshari, the 15 syllabled mantra.