Livia Firth's Green Carpet Challenge – Livia Firth is a passionate advocate of green issues. She founded the Green Carpet Challenge with British fashion journalist Lucy Siegle in 2009. The effort to promote sustainable fashion at award cermonies and premieres has attracted some of the biggest names in film and fashion.
Fair trade fashion – Firth and husband Colin attend this year's Vanity Fair Oscars party. Her gown is made from silk and fabric made from recycled plastic bottles.
Julianne Moore goes green – Four-time Oscar nominee, Julianne Moore wears a Tom Ford creation made with recycled velvet.
Recycled fashion – Livia and Colin Firth attend the 69th Golden Globe Awards in January 2012. The dress, created by Italian fashion house Armani, was made from recycled plastic bottles.
Meryl Streep's eco-gown – Before she walked off with this year's Oscar for best actress, Meryl Streep walked down the red carpet in an eco-fabric certified gown made by Parisian fashion house Lanvin.
Fassbender joins the fray – Michael Fassbender has also joined the Green Carpet Challenge, wearing a recycled wool suit to this year's British Academy Awards.
Upcycled designer gown – Firth wearing a dress made from upcycled fabrics, created by British fashion designer Henrietta Ludgate.
A passion for ethical fashion – Ludgate says she upcycles many of her fabrics and produces everything locally.