Kim Kardashian West had some pretty dramatic implants installed under her skin ... and these make her look like she just arrived from another planet.
Kim posted a couple vids Monday showing a growth in her neck that lights up to the rhythm of her heartbeat. The temporary piece -- that looks like an alien necklace -- is part of a larger art experience called A. Human ... founded by Simon Huck.
Chrissy Teigen wore feathers sprouting from her chest.
"Queer Eye" star Tan France got in on the action too -- with a piece called The Tudor -- a living piece of jewelry made to look like ruffled skin with bioreactive crystals.
Transgender supermodel Andreja Pejic wore skin-sculpted shoulders, a design called The Pinnacle, that was part of a collab with designer and former Lady Gaga creative director Nicola Formichetti.
A. Human will open as a month-long interactive art experience, starting September 5 in NYC.
We're told the experience is sure to be one for the avid Instagrammer ... and could feature some celeb appearances too.