The new Miss Earth crown is entirely made up of recycled precious metals.
The participants take part in tree planting ceremonies and other environmental awareness programmes.
The finale of Miss Earth, 2012, is scheduled to take place on November 24, 2012 at the Versailles Clubhouse, Philippines.
Miss Earth competition was first launched in 2001 to promote the environment related issues.
Miss Earth is among the top three biggest beauty pageants in the world, along with Miss World and Miss Universe. A contestant performs the Gangnam Style by K-Pop singer Psy.
Close to a hundred beauties are vying for the Miss Earth title, which organizers claim as the only beauty pageant with an advocacy to save Mother Earth. Contestants performs the Gangnam Style by K-Pop singer Psy.
Candidates for this year's Miss Earth beauty pageant pose with tree saplings and paper pinwheels at suburban Taguig city, east of Manila, Philippines.
Siria Ysabel Bojorquez, representing the United States for this year's Miss Earth beauty pageant, poses at the backstage during the media presentation.
The Miss Earth winner also becomes the spokesperson for the Miss Earth Foundation of the United Nations Environment Programme (UNEP).
Lorraine Ditsebe, a candidate from Botswana, walks on the ramp during media presentation at the Miss Earth beauty pageant.
Miss Earth is an international beauty pageant that is meant to make people more aware about environmental issues.