Consider Emily Blunt officially “Green Carpet Challenged.” The British actress attended the unveiling of the Metropolitan Museum of Art’s latest exhibit, Punk: Chaos to Couture, on Monday night in a Carolina Herrera gown made with a vintage-certified blend of 1960s Italian wool and 1940s black chiffon. Accompanying Blunt at the star-studded gala was her husband, The Office star John Krasinkski, who buttoned up in a bespoke Tom Ford tuxedo derived from Oeko-Tex-certified wool.

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“I’m so excited that Carolina Herrera has created this gown for me with elegance and ethics in mind,” Blunt told British Vogue. “It’s gorgeous and edgy and it thrills me to be a part of a fashion moment that hasn’t compromised itself in creativity yet has the important story of using all sustainable fabrics and techniques.”

Livia Firth plundered the Moschino archives for her dress, created almost 20 years ago as part of an “ecological collection.”

Livia Firth, the Eco-Age creative director who launched the initiative in 2010 to drive awareness of ethical fashion on the red carpet, plundered the Moschino archives for her dress, which the label’s founder, Franco Moschino, created almost 20 years ago for an “ecological collection” he was working on. Her beau, Oscar-winning actor Colin Firth, also “recycled” his look by donning the same Tom Ford tuxedo he wore at last year’s Met Ball.

“Livia’s energy is hard to resist as she is both gentle and strong at the same time, making us all aware that the eco-message today is a mission for all of us and more than a mere ‘accessory,'” said Moschino’s Rossella Jardini.

[Via British Vogue]