May marks the official start of wedding season, and once you’ve received the invitations and RSVP’d, the real work begins: figuring out what to wear to all those celebrations. Navigating the various dress codes involved can be challenging, but there’s more to consider — like the event’s weather, venue and terrain, not to mention striking the right balance with your accessories. With a few warm-weather weddings coming up on my own calendar, I headed to Bloomingdale’s New York City flagship to put together three looks that align with the attire requests you’re most likely to come across. Read on for your dress-code refresher! Formal & black tie Bloomingdale's These fancy functions call for elegant, elevated attire. You can never go wrong with a floor-length gown for a formal event, but midi dresses can work too. And don’t underestimate the power of accessories; heels, jewelry and a great clutch will help you elevate any black tie ensemble.…