My Quinceanera Invitations

This video shows a very nice Quinceanera celebration.  It shows how white can be used to present a theme of elegance and formality.  Invitations to this Quinceanera were likely simple, yet formal, using basic white, or perhaps a black or silver ribbon on white cardstock.  A black & white portrait could be used beatifully in the invitations for this Quinceanera, and would be a great way to create absolutely unique Quinceanera invitations.  What do you think would be the best Quinceanera invitations for this theme?