Livia Firth's bamboo suit is an example of how she's keeping to her Green Carpet Challenge. Livia Firth, Colin Firth's wife, has made a public promise to only wear eco-friendly clothing, while maintaining that sexy, stylish look (as she is an owner of green boutique 'Eco Age').
The use of bamboo in textiles is favorable for the ecosystem since there are ethical procedures in the harvesting and processing it, making it superior to other fibers like rayon. Although the ecological benefits the outfit may have, what's the point in wearing it if doesn't look good? However, that's irrelevant in this case, of course, as Livia Firth's towering figure in her sexy bamboo suit actually outshines Julianne Moore's red carpet look. She totally shows that going green can be sexy!