This dress is described as an "odd gown" in a March 16, 1912 article about what the best dressed women are going to wear.
I don't think it looks any more or less odd than any of the other dresses pictured in the the Ogden, Utah Evening Standard. It definitely would be odd if worn with a turn-of-the-century S bend corset instead of "the new corset, short above the waist, and with it's accompanying brassier." I think any of the Henderson's corsets shown in this ad found in the North Platte Semi-Weekly Tribune ad qualify as "the new corset."
I've been looking for an ad with a corset cut just like Norah Waugh's 1911 patter and haven't found one. The second one in the top row comes close, but without gores. The corset on the top right looks like the post Edwardian pattern used for the sew along. Are there still stragglers out there finishing up sew along corsets? I'll be posting photos of my 1911 corset next week, if you aren't quite done you've got the weekend to finish those last details. Just keep sewing. Don't forget to share your images on the flickr page. It is so exciting seeing the finished pieces! They are looking great, you are so talented!