So he has his usual fit, but wearing a tux under the vest (like blue or sum other color tux)
Also moneybag on the back (could act as your school backpack idk [ur in school right?])
and, if ur school allows it, a nerf gun.
oh i forgot to mention the gimmick:
If you have friends, they could dress up as other characters in payday style too, and you'd have a whole bank robbing crew.