I would either wear a camisole underneath or get some non-fusible tricot fabric and tack it onto the wrong side by hand, going through the existing embroidery stitches. Chances are you could hand sew to the stitches on the underside; wouldn't even need to go through to the right side. Tricot doesn't ravel, so afterwards you could simply trim the tricot around your hand stitching. To get the tricot to lay flat as you work, I would use some basting spray or Elmer's white washable school glue to secure the tricot before starting to hand sew. The hand sewing would go faster than you might think since you don't have to worry about making the stitches neat or even. A single thread would be enough; just knot every few inches in case you get a break later.
Last edited by Prism99; 04-08-2016 at 10:06 AM.