Dress as an arab milf, with full veil covering and a rosary bead to match.
Or
A nun, with veil, rosary, and a book to signify prayer book.
Your mistress on the other hand should cuff you and give you a hot blowjob in either of those robs, and you shouldn't cum, not even a drop of precum is allowed.
Thanks for the suggestion, sadly my Mistress cannot be part of the Video (written in the rules).