It is a special item in नवरात्रिपूजा . According to the definition ' कुमारिका tu sā proktā dvivarṣā yā bhavediha', कुमारी is a two-year old female child. To worship such a child is कुमरीपूजा , and it should be conducted accompanied by sumptuous feasts and presentation of clothes etc. There are no hard and fast rules as to how many कुमारीस् should be worshipped and as to the manner and method of the worship. The same कुमारी may be worshipped during all the days of the पूजा , or every day one more girl may be worshipped like this:--one girl on the first day, two on the second day and so on. Or it may be in the order 4, 6, 8 etc or 4, 8, 12, 16 etc. Even if the daily number be nine it is in order. There is no rule that कुमारीस् alone should be worshipped; any one of the नवकन्यकास् would do. A girl two years old is called कुमारी , three years old त्रिमूर्ति ; four years old कल्याणी ; five years old रोहिणी ; six years old काली ; Seven years old चण्डिका ; eight years old शाम्भवी ; nine years old दुर्गा and ten years old सुभद्रा . These girls are called नवकन्यकास् . But, a child less than two years of age should not be worshipped, because it will not be fully sensitive to taste, smell etc. Also, age alone does not render कुमारीस् suitable for worship. They should be absolutely free from ulcers, leprosy, ugliness, squint-eyes, dwarfishness, lameness, bad odour, stigma of low birth etc. For the achievement of special objects a ब्रह्मिन् child should be worshipped; for victory, a क्षत्रिय child and for profit, a वैश्य or a सूद्र child should be worshipped. The ब्रह्मिन् may worship ब्रह्मिन् childern; the क्षत्रिय , ब्रह्मिन् and क्षत्रिय children; the वैश्य , ब्रह्मिन् , क्षत्रिय and वैश्य children; and the शूद्र , ब्रह्मिन् , क्षत्रिय , वैश्य and शूद्र children. (Devī Bhāgavata, 3rd Skandha).