Dressing The Chambelanes

OMG my quince is on 6 weeks and i dont know what the chambelanes should wear. Im tired of seeing them in Pachuco a lot of the quinceanera that I have been to they always wear that. I want mine to wear something else. I wouldnt mind them wearing tuxedos but i dont know if they should wear a tie or a bow. Or if they should wear a vest or the thing that goes around their stomach.

If anyone knows whats best please help!!!!!!!!!!!