I found some soft, inexpensive tanks at Target, but wasn't a fan of the plastic jewel action going on in the front. So, I decided to change them up a bit.
}One 2 1/2" x 44" strip of fabric (I used one from Moda's 1933 Chloe's Closet Jelly Roll)
}Cut a 2 1/2" x 44" strip of fabric using pinking shears. If you are using fabric from a Jelly Roll, you can skip this step as the strip is already the right size and pinked.
}Finish the short, raw ends of the strip by folding each end under twice. Press with iron and stitch to secure.
}Using a basting or gathering stitch, sew down the center of the strip, from one end to the other.
}Pin one of the finished ends to one of the tank's shoulder seams. Do the same to the other side. Pull the basting threads to gather the strip until it fits between the should seams.
}Match the top edge of the ruffle to the neck of the tank, pinning as you go.
}Stitch the ruffle to the tank by following the basting stitch. Sew down the ruffle again, stitching 1/4" from your first seam (see top photo).
}Remove pins, clip threads and enjoy!