I think you will get more information if you post your question on the quilting forum...they are pros at bias binding.

Charise, is it McCall's 5124? I just made two of them (one for new grandson, the other for neighbor's new grandson). Directions say to sew leg opening together, right side to right side, leaving room for the divider between the legs to fit into. Then turn it right side out, slip the divider into the space you left, and top stitch. Bias binding would be rather hard to do in that small area if it's the same pattern I have.
Mary

If you have Sandra BetzinaÂs book "Power Sewing" she explains how to bind the inside corners of a neckline with French fold binding (with pictures!)- the way most quilters bind quilts. Double-fold binding will be a bit trickier, especially if you are trying to sew it on with one line of stitching.

No matter which binding method you are using, what youÂll need to do is to make a pleat or a dart on the inside of the binding where it goes around the inside corner. You will probably need to actually sew a V-shaped dart and clip it in order to get it to shape itself around the corner.

If you sew the double-fold binding on with two seams, the pleat/dart task will be easier. HereÂs what IÂd do:

1. Unfold bias tape and, with right sides together, match crease of tape with seam line (you want the edge of the unfolded tape to line up with the edge of your project). Make sure narrow side of tape is closest to the seam line. Sew, tape side up, in tape crease. Start in the middle of one side of the square hole, not in the corner, leaving some extra to use to connect the two ends of the tape when you finish up.

2. When you get to an inside corner where you need to turn, stop with your needle down in the corner of the seam line.

3. Pivot the piece 90 degrees. Now, bring the bias tape around the corner and lay the bias tape along the "next" edge in the square, which will make a fold in the tape at the corner.

4. Line up the bias tape matching the crease with the seam line, and continue to sew in the fold line and turn at each corner by pivoting and folding the bias tape.

5. Overlap the ends of the tape, or use whatever your favorite method is to join the ends when you get to where you started.

6. At each corner, on the inside of the binding, stitch a 90 degree or V-shaped dart. The V needs to start at the stitched-down fold line, come to a point at the middle fold line of the tape, then taper out again to the other outside fold line. You donÂt want to stitch into the bias seam allowance on the other side, only to the fold line.

7. Clip the V-shaped dart into the point of the V without cutting through the stitching.

8. Fold under the other outside fold of the tape, fold the tape around the edge of the project (so the middle fold is on the very edge that you are binding), then either stitch in the ditch of the seam you sewed in steps 1-3, catching the edge of the binding on the other side of the project or hand stitch the second side of the binding to the project.

Here are a couple of links that might be helpful:

http://www.trudiehughes.com/inside_corners.htm

http://www.wrights.com/class/sewing/doublefoldbias/doublefoldbias.htm

HTH,
CMC