One of my favorite books growing up were the Madeline series...I think because even from an early age I was obsessed with all things French. I even read them again in French in high school.
So, here is my modern-day Madeline.....
I used the same vintage pattern as last week, changed the collar a bit to make it bigger, and then made
the necktie and headband to wear with it.
Onto the zipper. Some sewers love to put in zippers and others don't. I am in the don't category. But I do put them in on nice dresses or skirts....but only the invisible kind (with an invisible zipper foot.) But play dresses....when most of the time I am using fabric that costs about the same as a zipper....I don't bother. 'Cause in my mind they are meant to be play dresses and not fancy.
It's kind of a modified neck placket (I don't use facing)...and here's what I do.
Add on to your back seam allowances. I usually do 1 inch instead of 5/8ths.
Measure down about 5 or 5 1/2 inches from the top. (Big enough to get a head through.) Mark with a pin.
Sew up the back seam to your marking pin. Then serge or zig zag each seam SEPERATELY.
Cut a piece of elastic cording and pin into the left seam. then topstitch the placket like the picture below. Go over the part with your elastic cording a couple of times to make sure it is sewn in well.
Sew a button onto the right side of the placket and you are done.
(Although don't look too closely.....cheap thread and I were having a battle...and the cheap thread won. Another reason to buy good thread...but I didn't have any that matched as well.)