1800 Emma, Lady Hamilton, wearing Maltese Cross by Johann Heinrich Schmidt (National Maritime Museum - London UK)
How do you become a Lady of rank if not born that way? The answer is simple if you're pretty. She was "associated" with Admiral Horatio Nelson after being married at the age of 26 to Sir William Hamilton who was British Envoy to the Kingdom of Two Sicilies and aged 60 when she met Nelson. Her Wikipedia article, with links to numerous pictures of her in theatrical dress, is here.