His tie is FAR TOO BIG and out of style, his shirt studs are all wrong ( too big, too gaudy, and too noticeable...like DIRT SPOTS! ), his jacket doesn’t fit ( they never do ! ) and it has nothing to do with the bullet proof vest...IF he is even wearing one. He’s just a shlub and a lousy dresser. Maybe he has a weird, disproportionate body and arms.
Maybe he was last because he was borrowing a jacket again. After seeing what the proper dress was ( by looking at what DJT was wearing) he may have needed to change so he found a waiter about his size. .... Well it could happen .... Or there was a prom in the next hall and he borrowed Toney’s Tux