Upon closer inspection, it is starting to look like the bertha/collar thing is ONLY on the front. There is a ridge on the shoulder seam that looks like the collar dissapears into. If this is the case, then I think my whole "well, how do I get into it if it's solid all the way around" problem is solved. I still, however, need to figure out a way to attach it to the shoulder without looking like poo.
I've asked Holly if she'd be willing to take on a commission for the jewelry...I'll see what she says! ;)