The first thing that jumped to my mind was Simplicity 3673 too. You'd just have to draft a narrow collar and add some short sleeves from another pattern. (I mean, *I'd* just have to draft a collar and sleeves, since I have this pattern, and I'd have the cutest dress for winter ;) I get the best inspirations from all of you members!
Thank you for the suggestion. That does look like a very close match. I've never drafted a collar before, but I guess the sleeve would be easy to do, if you just borrow it from another pattern. Thanks again:)