I agree with3xnanny that shirring elastic will only work with knitted fabric.I've done that with a few tops which have stretched.
Another idea is to make a 'dickey' - a sort of false blouse front.
But that would change the style altogether.
School sports days - agree or disagree
Change Add or Subtract (Up to two letters) - 9
I’ve been meaning to do a thread about this for a while: Myers-Briggs 📝