Susanna Fourment, 1622-25 by Peter Paul Rubens, National Gallery, London.
A portrait of Rubens' sister-in-law, who was widowed by the time this was painted. Her sister was Rubens' second wife. Rubens' was the most famous and popular painter of the 17th century. His paintings of full-figured females have spawned the term "rubenisque" to describe voluptuous figures.