Fashion's finest might be renowned most for their beauty and success,  but they surely do not hesitate to step up and give back when altruism beckons.

Charitybuzz and Christie's Auction House teamed up with fashion's finest - including the likes of Coco Rocha, Stella McCartney, Roberto Cavalli, Rachel Roy and Lanvin - for the Green Auction: BID to Save the Earth.

Charitybuzz's Green Auction benefits four of the world's leading environmental nonprofits: Oceana, Conservation International, Central Park Conservancy and Natural Resources Defense Council. The movement was initiated in 2010 by Christie's and is expected to raise millions of dollars in proceeds.

The theme for the third annual Green Auction: BID to Save the Earth auction, which runs March 29 through April 12, is water. Last year, the initiative raised a record-breaking $2.4 million.

The choice to focus this year's theme on water stemmed from each organization's notion that water is the source of life, and there are simple methods anyone can follow to play a part in preserving it, according to Charitybuzz. The goal of the Green Auction is to raise awareness and funds for the large-scale earth-saving initiatives programmed by each non-profit, as well as to demonstrate how easy it can be to act green in everyday routines.

On the auction block for the BID to Save the Earth are offerings from Simon Doonan, Coco Rocha, Stella McCartney, Rachel Roy, Lanvin, Fendi and Nicole Miller.  

Here is some further information on the goods and services up for auction for the Green Auction and on Chairtybuzz throughout the next month:

  • Supermodel Coco Rocha is giving one aspiring model and a guest the chance to win a crash course in high fashion modeling in NYC. Coco will impart hands-on wisdom about high fashion posing, photo movement and runway walk to benefit Christie's Green Auction: A Bid to Save the Earth, which is supporting water conservation efforts. Bidding on the experience, valued at $2,500, is open through April 19th at:http://www.charitybuzz.com/catalog_items/2960187 
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Photo Courtesy of Reuters
  • Vera Wang is offering an intimate lunch in NYC for two lucky winners, plus tickets to her Spring 2013 RTW Show. This item will benefit Figure Skating in Harlem, which teaches underprivileged girls leadership, perseverance and self-worth through ice skating. Bidding on the experience, valued at $25,000 is open through April 17th at:http://www.charitybuzz.com/catalog_items/293602
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Photo Courtesy of Charitybuzz
  • Other fashion icons are auctioning exclusive experiences and merchandise this April at Charitybuzz. Create a custom handbag from Bottega Veneta or attend the 2013 Grammy Awards in a custom couture gown designed by Katayoun Hajiannia, plus an exclusive Grammy/Oscars gift basket. Other fashion offerings are available fromStella McCartney, Fendi, Milly, Roberto Cavalli, Tabitha Simmons, Lanvin, Donna Karan, Rachel Roy, Nicole Miller, Shirley Ephraim, Lauren Bush, Pamela Hansonand many more. You can find all the philanthropic fashion items up for auction at:http://www.charitybuzz.com/categories/55
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Photo Courtesy of Charitybuzz

    Check out abidtosavetheearth.org to learn more about the Green Auction, the items up for grabs and how you can help.