I’m having trouble assessing how you evaluate classy but not super elegant. I totally understand wanting something unlike others. I really like dress and long jacket combinations. Look on Kaspar.com, Zappos , or even Talbots. Terri Jon also has some nice but expensive options. Personally, I would avoid the frum stores so you’re not wearing what everyone else does. Make an appointment with a personal shopper and go to Nordstrom or Bloomingdale’s. They can help you find clothes for your body type and also have alterations. Mazal tov and good luck.