It is formed on a lace pillow stuffed with straw, and frequently features the eight-pointed Maltese cross, but not necessarily.
From the en.wikipedia.org
Arlington high schools often get crowns and tiaras from Stumps, which sells rhinestone tiaras on metal frames for as much as $56, plus a $10 white satin and lace pillow to present them on.
From the chron.com
The Anastasia is a romantic, family heirloom-type pillow that features rich velvet and silk, lace, beading and fringe.