Portrait of Countess Livia da Porto Thiene and her Daughter Deidamia, Paolo Veronese
Link is to a zoomable image on Google Art Project; there is a downloadable file on Wikimedia Commons; the original is in the Walters Art Museum, which also has a zoomable and downloadable version, but not as high resolution.
This full length double portrait was originally paired with another, of the Count and the couple’s son, Adriano, now in the the Uffizi Gallery in Florence.
Full length portraits would become more common in subsequent centuries, they were still a rarity when the young Veronese painted these in the middle of the 16th century.