Before you do something drastic, go out and rent "So I Married An Ax Murderer" with Mike Myers and Nancy Travis. Skip forward to the wedding scene and take a good look at how good Mike Myers looks in a kilt. Beg, borrow, or rent a black Bonnie Prince Charlie, buy some snow white kilt socks (not oatmeal, not fluffy acrylic) with solid color flashes, borrow a sgian dhub with a stone in the pommel, buy a white tuxedo shirt with a black bow tie plus black wingtip shoes. Black is not the color for a wedding. If you have to wear a Jacobite shirt, wear a white one with a colorful vest over it. This will be the handsomest day of your life and you can trust me on that.