Margaret Cossaceanu, was born in Bucharest and was the niece of scientist George Constantinescu, inventor of the Theory of sonics.

It was during this stay in the Italian capital that she met French engraver-medalist André Lavrillier, winner of the Prix de Rome in 1914, and boarder at the Villa Medici.

After being awarded the Grand Prize at the Academy of Fine Arts in 1922, Cossaceanu left Rome to settle in Paris, where she attended the workshop of her compatriot Constantin Brâncuşi while continuing her studies at the Académie de la Grande Chaumière, in Antoine Bourdelle's studio,[1] where she met Germaine Richier and Alberto Giacometti.

She was commissioned to create a high relief for the International Exposition of Art and Technology in Modern Life (1937), for the Asian and Romanian pavilions.

In 1952, Bernheim-Jeune Gallery organized a retrospective exhibition of her work, and the Museum of Modern Art of the city of Paris acquired The great torso of Woman.