[2][3] Beginning at age 15, she was Aristide Maillol's muse for ten years, until his death in 1944 in a car crash.

[2] During her career as a model, she also posed for Henri Matisse,[4] Raoul Dufy, and Pierre Bonnard.

[2][3] Both Matisse and Bonnard attributed a renewed inspiration for painting and sculpture to Vierny.

[citation needed] After Maillol moved to Banyuls-sur-Mer in 1939, she worked as a guide for the organization founded by Varian Fry to smuggle refugees out of occupied France[2] during World War II.

[5] She was arrested by police in France and acquitted after a trial, and then left temporarily for Nice to pose for Henri Matisse before returning to Banyuls-sur-Mer.