@Floisme Aha, the films of Alfred Hitchcock and Edith Head, either would be my Mastermind subject! Tipp Hedren in both The Birds and Marnie has a less full silhouette, as does Madeleine in Vertgio. It's also too classy for Judy to wear too. If anything, it brings to mind the dress (with matching parasol) Schatzie Page (Lauren Becall) is modelling in How to Marry a Millionaire. But yes, it's absolutely something that one could see Edith Head put her name too.
What I like best about the Self Portrait outfit is that it's a brilliant blank canvas to accessories. If one was to pair it with nude court shoes, pearl studs and a strings of pearls, then yes, absolutely, it's trad/Tory wife vibes. However, I can't really see a 26 year old styling it that way, or anyone with even a modicum of style. Ice blue such as this looks amazing with other ice colours, neon brights too. In fact, pretty much anything. Indeed, am in my late 40s and. would wear it with either oversized drop Roccoco pearl earrings studded with gems (a la Phoebe Philo for Céline) or enamel earrings, also studded with gems and pearls. Add in some amazing strappy/cage/laced sandals in a bright colour, and it will look super chic, ditto even with the right black accessories. Maybe, probably, this is the real issue, many just don't know how to accessories something for a wedding beyond a nude pair of shoes and a fascinator, the latter of which should never be worn anyway.