Sonia Delaunay oil paining called 'Colored Rhythm'. I first learnt about this artist when I was researching an art deco project. I really like the geometric shapes she has created and her use of both muted and bold colours.
Sonia Delaunay's wonderfully illustrated poem, La Prose du Transsibérien et de la petite Jehanne de France, by Swiss-French poet Blaise Cendrars is one of the highlights of 20th century literature and modern art. In this wonderful publication, the observer is entranced by Sonia Delaunay's extraordinary effects of lush, vibrant colors and bold shapes::
Fashion illustration by Sonia Delaunay, 1923. Also here: http://surfacepatterndesignrepeats.blogspot.co.uk/2011/12/sonia-delaunay-ukraine-18851979.html and here: http://www.wikipaintings.org/en/sonia-delaunay/fashion-illustration-1