Goddess Siddhidatri is also known as Goddess Laxmi among her followers. She is considered to be the symbol of success, wealth and happiness. She sits on a lotus flower and her ride is a lion. She has four arms. She holds a chakra in her right upper hand and a mace (gada) in her lower right hand. She has a lotus flower in her left upper hand and conch shell (Shankh) in her left lower hand.
She is the ultimate form of Shakti and is worshipped by all other gods. She is also worshipped by Asura, Yaksha, Gandharva and Siddha. It is believed that she achieved all the eight siddhis and also have half the body of Lord Shiva. If you take a look into images of Lord Shiva in his Ardhnareshwar avatar, you can see that half of his body is comprised by Goddess Siddhidatri. It is said that Lord Shiva worshiped Goddess Siddhidatri to get half of his body as that of Goddess Siddhidatri. According to the Markandeya Purana, the eight siddhis are: Anima, Mahima, Garima, Laghima, Prapti, Prakamya, Ishitwa and Vashitwa.