A little while back we reported on a selection of Alien & Predator costumes, masks, and accessories from HalloweenCostumes.com. I personally wore their Xenomorph costume at a Halloween party last year ...
James, an artisanal leather worker and owner of Pirates Leatherworks recently made a face mask out of 59 separate pieces of leather and hand-stitched them together in the shape of a facehugger alien.