A Pornstar Experience by TheSamMoose (Archive Link)
This is one of the first stories posted here, that go into the weird skinsuit and absorption fetish direction. Basically, Andrea, her husband Markus and their good friend Jeremy are up to some shenanigans involving the skinsuit of a popular fictional porn actress.
The special part in the works by TheSamMoose are, that sometimes there are skinsuits of other things. As an example, in this story here, there are skinsuits which transform the wearer (Markus and Jeremy in this case) just into certain body-parts, which then are merged with Andrea, who is wearing the actual skinsuit. These things sometimes appear in the stories by this author, and it allows for quite some interesting, weird but also really hot scenarios.
All in all, a more extreme story about skinsuits, but still really hot.