Star

There are times in life when a costume is needed for the nativity.  The old sheet is the simple option.  Hole in the middle.  Star or whatever is necessary cut out and sewn onto the middle.  It's probably better than creating an enormously stiff star from jazzy fabric which detracts from the central action, pokes Wise Men in the eyes and garners the comment, 'Did you intend her to overshadow Mary?'