Sewing Pattern Needed...HELP!!!!

[Butterbelly]

I've found the dress I want for my wedding, except that it doesn't come in plus sizes. A friend of mine suggested that I have the dress made, and she has offered to make it (she's a wonderful seamstress). However, when I started looking for patterns yesterday, I found NOTHING that went up to a size 26 that was even remotely close to the picture below. Does someone have a pattern suggestion or know where I can find a pattern like this?

View attachment vintage dress.JPG

View attachment vintage dress II.JPG

 

[BeaBea]

 

[Butterbelly]

 

[BeaBea]

 

[BrunetteBeauty80]