Manhattan-based Sublet Clothing prides itself on creating stylish clothing out of sustainable materials. And they're succeeding. All of their items are made from a blended fabric - 30% organic cotton and 67% bamboo, with a hint (3%) of spandex thrown in for the sake of texture and movement. Their items are simple and easy, such as the pretty Alison dress pictured at left. The deep V neckline would be flattering on any bust, while the pleating at the waist would hide a multitude of sins. It comes in black, white or olive, and it's on sale right now for $150, down from $242 full price, on their website.
You can buy sublet clothing on their website (shipping to Canada costs extra) as well as at many shops in the US - only one in Canada so far, but there's also lots of online merchants so check it out.