These are two illustrations from Art Deco master illustrator/ artist George Barbier's book Designs on the Dances of Vaslav Nijinsky. Nijinsky being the very famous ballet dancer of the time. The book contained illustrations of Nijinsky in ballets he was well know for. The top image is the cover of the book and the image below is an illustration for Nijinsky's ballet Carnaval.
Image from George Barbier: Master of Art Deco.