Aside from the national costume competition they also did an auction event, wherein they sell different kind of products from every candidates countries.
And the winners of the Miss Earth 2012 National Costume are:
Miss Malaysia 'Deviyah Daranee', 21-year old - Miss Earth 2012 National Costume - Third Placer
Miss South Africa 'Tamerin Jardine', 25-year old - Miss Earth 2012 National Costume - Second Placer and,
Miss Thailand 'Waratthaya Wongchayaporn', 19-year old - Miss Earth 2012 Best National Costume Winner.
You may find here the complete list of Miss Earth 2012 candidates.
For the meantime, please bookmark this page or visit this site more often if you want to be updated on the Miss Earth 2012 events.