Should the groom be allowed to wear what he wants, even if the bride hates it?
I think that if the groom gets no say in what the bride wears, then the bride gets no say in what the groom wears. Having said that, I think that if the groom says to the bride "I really hate halter top dresses" she shouldn't get a halter top dress, and if he says to her "I want to wear a lime green suit" and she bursts into tears, he should reconsider.