Stéphanie Szostak (born 5 November 1975) is a French actress and author who started her career in the early 2000s.

Szostak is best known for having appeared in the films The Devil Wears Prada, Dinner for Schmucks, Iron Man 3,[1] and R.I.P.D.

[2] Szostak starred in the USA Network original drama series Satisfaction and the ABC series A Million Little Things.

Szostak was raised in the suburbs of Paris, France.

[2] She moved to the United States to study business at the College of William & Mary in Williamsburg, Virginia, where she played on the women's varsity golf team.