There is a minhag among some people in recent years to wear a raincoat under the Chuppah. What is the source of this minhag? When did this minhag start? And is there anyone who specifically says not to do it?
I have seen people wearing a coat over a kittel at an indoor wedding. When I asked, I was told that it is a matter of modesty. The chosson is not claiming an 'exalted' status that might be implied by wearing the kittel. I was not given a source for this.