It's important to note that in Russian there is no specific word for 'is' or 'are' (a 'to be' verb) that's most often used, it's usually implied. Therefore, literally the sentence means 'On the woman are shoes.' In English we would say 'The woman is wearing shoes.'
While Russian does have a verb 'to wear' Носить (which can also mean to carry or to bear), you'll often see just the prepositional case being used.