This doesn't totally address your question, but have you ever shopped at Torrid? They do a big online business and have some stores. It tends to be younger and sexier clothing and lower in cost than my other fav, Lane Bryant. My only issue with Torrid is that their sizing is inconsistent. I bought 3 different sizes last time I was there! I would think that would be problematic if ordering online.
My other plus size issue: I am looking at having a kid soon. Where are all the plus sized maternity clothes? I guess plus sized women aren't supposed to have kids.
My own body is curvy with huge boobs. I would feel and look much thinner if I were less busty. But, like you, I care about fashion and appearance and do my best to "work what I got."
Best,
EJ