Azazie has a few different sheer shawls/scarves (look under the "accessories" tab). You can order swatches of the pinkish colors that look closest on the computer and then use them to decide which color best matches. My MOB dress was a dusty pink, and I did the same thing to find a shawl that would match.
This link to a "petal rose" pashmina shawl on amazon seems close to the dress color in my opinion, but computer screens can always distort color! I found it in less than two minutes of searching, so definitely spend some time online if possible - there are tons of options.