I’ve been planning this project for some time, but I never found the proper skirt to work with. Here it is now, an old and ugly H&M number I found in a second hand shop. If you want to try this yourself, look for a skirt that is: long enough (preferably maxi), fitted at your waist and with a lateral closure. Otherwise things will become more complicated (taking it in, adding a zipper etc.) and no one wants that.
What you need:
- maxi skirt (as described above)
- sewing machine
- two buttons
Start by trying on the skirt and marking the new length you want. Cut through and hem. Using the denim fabric you cut off, make the front of the pinafore, a rectangular. Make use of the already available hems as much as possible to ease your work (like I did for the upper part). Hem it and try it one before sewing it to the skirt.
With your skirt on, measure how long the straps should be. It would be helpful if someone else could do the measuring for you. Don’t forget that the straps have to cross at the back.
Cut two denim pieces of that length, with the width being twice the strap width + 2 cm seam allowance. Fold and pin throughout the length, as seen above. Iron a bit, and then use the zig-zag setting on your machine to stitch along each strap.
Try the whole thing on again and stitch the straps at the lower back. Cross them and mark the spot where your buttons should be. Stitch the buttons and make the corresponding buttonholes on the chest.