This fabric has two-way stretch and the main challenge was the knot. The fit is good. I didn't make any changes because I wasn't sure how the knot would work out.
The photo above was for my reference so I could keep track of how where the knot is placed. I sewed the knot onto the front bodice centre after sewing the left and right curves under the bust. I had to wearing it to see where the knot folds should go and then I machine stitched this piece together. The back wasn't adjusted for sway back because I was testing the fit of this view.