This simple type of collar is best for shirts that you plan to leave unbuttoned at the top. If you want to button your blouse all the way up, you need to do some fancier drafting that allows the collar to roll properly. But for the purposes of making a blouse like the one above (which I intended to be worn open), a simple rectangular collar is fine. I suppose one could say that this collar isn't all that convertible anymore, but let's not split hairs, shall we?
So here's how you do it.
- Figure out your collar LENGTH measurement. Get out your blouse front and back bodice pieces. Use a measuring tape to measure the neckline of the pattern pieces on the seam line (do not include seam allowances or darts in your measurement) from center front to center back. You can also just sew up the blouse to this point and then measure around the neckline as it is sewn. On my blouse, the measurement was 10". Double this measurement to get your full collar length. So, your collar length is 20".
- Decide on your collar WIDTH measurement. I wanted mine to be fairly narrow, so I went with 2".
- Draw a rectangle that is your WIDTH x your LENGTH.
This is only half the width of your finished collar. Now you need to add the other half that will get folded to form the entire collar. So add another two inches to the bottom, like this:
- Only your under collar will be interfaced. I like to draw little slash marks to indicate this, like so:
- Now add a 5/8" seam allowance all around, like I've done in blue below. Voila! This is your pattern piece.
To sew your collar: *
- Lay out your fabric and cut out one of pattern piece on grain.
- Interface undercollar portion only with a lightweight fusible.
- Fold collar in half horizontally, right sides together.
- Sew on short ends, with a 5/8" seam allowance.
- Trim seam allowances and cut corners diagonally.
- Turn collar right side out, poke corners out with a point turner or knitting needle, and press.
- Baste raw edges of collar to neckline, matching up the collar ends with your center fronts.
- Stitch on your facings as directed by the pattern.
That's it, lovely readers! Let me know if you have any questions.