Alphonse Mucha Love the frame in this - the detail of it tied up with twine. Also like the flowers at the bottom and the stained glass window effect behind her. Think it would look great with more flowers climbing up the side borders.
One of history's most renowned Art Nouveau painters Gustav Klimt is known for his decorative style paintings filled with erotic scenes. And considering all the subtle details in the paintings, these must've been quite a challenge to put on canvas.