The Daily Dress: Barbara Tfank Scalloped Collar Dress
I admit that I'd never heard of Barbara Tfank until one of her dresses was featured in the Teen Vogue prom issue. (Aside: I'm convinced that both prom itself and Teen Vogue are wasted on teens.) I searched out some more of her designs, and they're quite pretty and retro-inspired. I especially like this delicate lime-green dress with its unusual scalloped collar.
Scallops are such a great design feature that you just don't see in too many modern patterns or ready-to-wear clothing. But there are a couple great resources for learning how to sew them yourself! First, I have to recommend Casey's recent 30s-inspired blouse tutorial. (See both part 1 and part 2.) Secondly, you do NOT want to miss Susan Khalje's Threads article on sewing scallops, the entirety of which can be read here.
Also check out Etsy for patterns with scalloped details, like this one.