u/Amyduchess

I am have self drafted a dress that I want to have a very deep V neckline. I’ve made the mock up, but because I have a decently sized chest, the deep v below my bust sort of collapses. What would be the best way to add structure to this? Would interfacing be sufficient? Or should I add one of those V shaped bra wires? Or a small amount of sew-in boning?

I planned to make the final dress in a heavy-ish weight denim. Attached photo for inspo