Jessica broke the new on her personal web page. "Actress Jessica Chastain has been named the ambassadress of a new Yves Saint Laurent fragrance, called Manifesto, due out starting at the end of August."

'The Help' actress said "Yves Saint Laurent is a brand that inspires me deeply," - "Since its creation, the brand has conveyed strong values that I cherish, adding "The new fragrance is an emblem of it all. I am excited to be part of this beautiful adventure," in an interview with WWD.

"We were won over by the very subtle strength of Jessica Chastain, her solar charm, her free mind," stated Stephan Bezy, international GM of Yves Saint Laurent Beaute at L'Oreal to WWD.

Manifesto will be introduced first in France Aug. 27, US launch is expected in first quarter of 2013.