Titian
This painting is considered the finest surviving version of a composition executed in at least 30 variations by Titian and his workshop. It remained in the artist’s possession until his death, more than 20 years after he painted it. The reason Titian retained a painting of such high quality for so long is uncertain, but this Venus may have been a source of inspiration to those who worked for or visited the artist. For members of the workshop, she may have served as a model for replication, and the painting may have prompted visitors to order similar pictures for themselves.
Titian was called by his contemporaries as "The Sun Amidst Small Stars" (recalling the final line of Dante's Paradiso). He was one of the most versatile of Italian painters, equally adept with portraits, landscape backgrounds, and mythological and religious subjects. His painting methods, particularly in the application and use of color, exercised a profound influence not only on painters of the late Italian Renaissance, but on future generations of Western art.
P.S. Venus was often depicted with a mirror by many great artists; here you can read about the famous Rokeby Venus by Diego Velázquez and compare it with Titian's version. It's a true battle of the Titans!