My fiance doesn't want to wear a jacket for our wedding. It's going to be the middle of August, and he's practically a polar bear because he's so hot natured. He also doesn't think he looks good with a jacket on. I'm perfectly fine with this, because I understand and think all the guys would look great with brown dress pants, shoes, ties, and vests (brown for fiance, blue for GMs).
My mother, however, is very strongly opposed to no jackets. She thinks it's ridiculous for them not to wear them and believes the back of the vests will not match the rest of the outfit. I think the back is usually black or white, but it depends on where we get them.
Is it "against ettiquette" or whatever for the guys not to wear jackets? This is not a beach or outdoor wedding, btw. We're just going a little more casual.