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Maria Bronislavovna Vorobyeva-Stebelska (Russian: Мария Брониславовна Воробьёва-Стебельская; Maria Bronislavovna Vorobyova-Stebelskaya; 1892 – 4 May 1984), also known as "Marie Vorobieff" or Marevna, was a 20th-century, Russian-born painter known for her work with Cubism and pointillism.
She is internationally known for convincingly combining elements of cubism (called by her "Dimensionalism") with pointillism and – through the use of the Golden Ratio for laying out paintings – structure. She has been accredited with being the first female cubist painter. Though she lived the greater part of her life abroad – her formative years as a cubist painter in France and her mature years in England – she is often referred to as a "Russian painter".
From her relationship with the Mexican cubist painter and later muralist Diego Rivera in Paris she had a daughter, Marika Rivera (1919-2010), who became a professional dancer and film actress.