Beautiful fabric again. It’s 100% cotton. This was a shirt one size smaller than my mom wears. Having the experience from her last blouse, when I saw this, it was an instant decision. Enlarge a bit. So, side seams were unpicked. Sleeve seams were unpicked too. And straps of some beige cotton were cut out. I did not have white. This color is not perfect, but it does the job.
Working hard! Stretching paws after a good sleep!
Anyway, ignore the cat and look how the shirt turned out:
I think it looks ok, especially when worn with beige pants.
PS: This method of enlargement works when going one size bigger only. Do not use it for grading more than one size. You’ll get a distorted garment.