Well...I noticed my multi-sized pattern says (8-14). It must have been the only one they had in stock. Sigh. I start with a 16. Sooooo, along with my regular alterations I had to size it up one size from the neck through the waist, then to a 18-20 through the hips. So to make my life a little easier I did some of the size additions in the middle of the pattern by cutting the center line and making my addition. I also changed the height of the crossover front pieces. I lowered them a bit. When I tissue fit to Ruby, I noticed they crossed right over the boobage. So I lowered them to cross under the boobage. LOL. Here is a picture of the front crossover pieces on Ruby with one of my alterations (the line drawn where to cut to lower the fronts).
Notice I haven't yet addressed the length of the robe. Below is a picture of the changes actually made to the pattern.
The cut piece is the piece that allows the robe to go under the boobage. LOL. Or so I hope. I'll be making a test/muslin of the blouse before I actually make the robe so I can do any tweaking that might be necessary.