Devotees worship the Goddess as Siddhidaatri on the ninth day of Navratri. She is believed to be the governing force of fame, strength and prosperity. She holds a lotus, conch, gada and a sudarshan chakra in four hands and sits on a lotus flower.
Devotees offer porridge, puri and kheer to the Goddess as prasad. They offer scented flowers and honey to the Goddess and chant “Om Cleeng Chamundaaye vicche namo namaha”. They also recite the Durga Saptashati. Bengalis offer pushpanjali (handful of flowers) and saree or chunari (dupatta)to the Goddess. Navaratri is concluded with a hawan.
Siddidaatri is believed to be the lord of all the Siddhis as per the Markandeya Purana – Anima, Mahima, Prakamya, Garima, Ishitwa, Laghima, Vashitwa and Prapti. Brahmavart Purana also mentions some other siddhis viz Sarvakamavasayita, Durshravana, Sarvagyatava, Parkaypraveshan, Srishti, Vaksiddhi Kalpvrikshatava and Sanharkaransamartaya .Devotees can achieve these siddhis by worshiping the goddess on this day.
: Some devotees observe kanya poojan on Nawami. Young girls (at least nine) are invited and devotees worship these girls as forms of the Goddess. They are offered clothes, fruits, money and a meal prepared in desi ghee
Purple and blue are Devi Siddhidaatri’s favourite colours, so devotees should eat blue or purple coloured food and wear clothes in these colours.