My FI and 2 of his GM are going to be wearing their dress blues for the wedding... he already asked me "hey, can we just wear our dress blues?" lol whatever makes it easier on him! lol :P and he looks awfully handsome in them

although he looks handome in everything ...anyways the other 2 GM are his brothers who are not in the military what would YOUR suggestions be for what they wear? Just a suit and tie? Dress pants and dress shirt? Can I leave it up to them? What have any of you or other people done in the past? I'm not worried with anything clashing ... just want opinions... I don't have the best eye when it comes to fashion and what looks good! THANKS!