Giulietta, a.k.a. Beau Peep Cosplay, was inspired by Alien and the upcoming appearance of Sigourney Weaver at a local convention and decided to make Alien-esque armor. She based her design on the Alien Queen. Incredibly, she only took three weeks to design and craft the costume. She would have preferred to make it more human and less creature, but I think what she did works well. Giulietta used Worbla and EVA foam floor mats to make the entire ensemble by hand.
The construction features several small pieces carefully fit together. See a couple of pictures below.