François Boucher ‘Portrait of Madame de Pompadour’ 1756 by Plum leaves on Flickr.
Via Flickr:
In 1745 Jeanne-Antoinette Poisson became the mistress of Louis XV. Owing to her intellectual propensity, which impressed the king, she soon attained an elevated position at court, the climax of which was in 1756 her being named as the queen’s lady-in-waiting. To commemorate the occasion a combination private and official portrait was painted by Boucher.
Oil on canvas (201 x 157 cm)
Alte Pinakothek museum, München, Germany : www.pinakothek.de/en/francois-boucher/portrait-marquise-d…
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Boucher painted another half length portrait based on the above painting about two years later. The half length portrait is held at the National Gallery of Scotland: www.nationalgalleries.org/collection/artists-a-z/B/2808/a…
A high resolution image of this second half length portrait at Wikipedia: upload.wikimedia.org/wikipedia/commons/8/88/Fran%C3%A7ois… 

I want this.