Many mainstream magazines always feature a shape issue 1-2 times a year. They try to feature a range of body types from thin, tall, petitie, and of course, the curvy figure. Take V magazine for example. Gaborney Sidebe was the leading lady on the cover and they had a "one size fits all" editorial with two models wearing the same exact clothes styled the exact same way, with similar poses. View the rest of the editorial here: One Size Fits All. While not all of the editorials are spot on, this one does a good job of explaining that curvier women can wear styles that are made for models, and possibly pull them off even better. One other excellent editorial (with the exception of 1 or two unflattering outfits) from that issue was: Curves Ahead.
In April 2010 Vogue had their shape issue featuring supermodel Gisele Budechen on the cover. Their curvy attribue to the magazine was model Kate Dillion, an image below:
The difference between magazines is huge, as well as their attitude towards the real woman figure. V magazine had a revolutionary issue, while Vogue was just like any other issue, only with a couple of "fuller figure" models. While strides have been made we clearly still have a long way to go.