Which ancient Egyptian goddess wore a headdress of cow horns and a sun disk?

Hathor was a major goddess in ancient Egyptian religion who played a wide variety of roles. As a sky deity, she was the mother or consort of the sky god Horus and the sun god Ra, both of whom were connected with kingship, and thus she was the symbolic mother of their earthly representatives, the pharaohs.

Her beneficent side represented music, dance, joy, love, sexuality and maternal care, and she acted as the consort of several male deities and the mother of their sons. These two aspects of the goddess exemplified the Egyptian conception of femininity. Hathor crossed boundaries between worlds, helping deceased souls in the transition to the afterlife.

Hathor was often depicted as a cow bearing the sun disk between her horns, especially when shown nursing the king. She could also appear as a woman with the head of a cow. Her most common form, however, was a woman wearing a headdress of the horns and sun disk, often with a red or turquoise sheath dress, or a dress combining both colors. Sometimes the horns stood atop a low modius or the vulture headdress that Egyptian queens often wore in the New Kingdom. Because Isis adopted the same headdress during the New Kingdom, the two goddesses can be distinguished only if labeled in writing.