Why not just wear a dark trouser suit, like men do. Oh hang on, you might get mistaken for the groom. Nobody ever says this to men do they. Stop feeding into the misogyny. It’s perfectly fine to wear a dress like this. If a man can wear a suit in a similar could to what the groom is wearing then what is the issue?
Quite. I've been to lots of work dinners where men are all wearing the same suits. Imagine! How embarrassing, no-one knew who the MD/Groom was.
Yep, doesn't work, does it?