On her blog, she says that they were from Overstock.com and she reupholstered them in this green Ikat fabric.

Here is a great fabric resource if you are feel adventurous:

http://quadrillefabrics.com/index.html

And Horchow Collection has some great upholstered bergere type chairs if you dont feel like diy today.

http://www.horchow.com/store/catalog/templates/HP3.jhtml?itemId=cat5720732&parentId=cat5720731&masterId=cat1290731