This is a portrait of Anne of Cleves, probably the same one that Henry VIII saw, that charmed him. Of course, we know from history that Henry felt that he had been duped when he finally met his new bride in the flesh, and discovered that she didn't exactly look like this portrait!
This is a potrait that is assumed to be of Katherine Howard, Henry VIII's fifth wife and Anne Boleyn's cousin. If you look closely at the eyes, nose and mouth, they are remarkably similar in both paintings! Both portraits were painted by Hans Holbein the Younger, which probably explains why there is such a similarity in their looks. Apparently Holbein wasn't as good at faces as he was at painting everything else!