This is the original prototype for the Xenomorph. The plan was for the Alien to be 'translucent' so that the actor Bolaji could be seen moving underneath the 'skin' of the costume.
2017 Halloween Costume Contest-Xenomorph ALIEN Costume — Stan Winston School of Character Arts Forums
Amazon.com: Authentic Alien Xenomorph Costume, Xenomorph Suit, Space Monster Outfit, Classic Sci-Fi Movie Monster Large Black : Clothing, Shoes & Jewelry
She Crocheted a Full-Body Xenomorph Costume From The Movie Alien – IT GLOWS! | KnitHacker