Matt's blazer and pants don't seem to match, as they aren't the same color. Also, the blazer seems a bit tight on him. His tie also seems frumpled and stuck to his shirt, perhaps with double-sided tape, at an odd angle. Matt should have just worn a leprechaun outfit!
I think that this ill-matched and ill-fitting outfit of Matt's sends a message: Matt might not care about these weddings as much as Tiffany does, which is why he just constructed his suit piecemeal. In fact, Tiffany mentioned that when she was getting herself ready, Matt was working on his bike! Matt is a real no-nonsense type of guy, and as long as he is wearing the elements of a suit, who cares if it matches or not, right?!!