I found a great site for plus sized clothing there are not just the same designs as smaller sizes that have been expanded. They are designed for curves.
They certainly have great prices too. With all their line being shirts and jackets though its a shopping killer.
We actually do carry Missphit at Perfectly Shaped World, through our relationship with Curvaceous Chic. Check out the Perfectly Shaped World's tops department to see a few (they're in the sidebar display).