The groom looks distinct from his groomsmen. Here, the groom wears a suit jacket and traditional tie, while the guys don vests and bowties.
I love this for the Mad Hatter. Instead of a black tie I would change it to red. Also ripped red black and gold ribbon around the base of the hat.
Alice In Wonderland Inspired Wedding
Costume ideas for 2013 Halloween:. Steampunk Mad Hatter