Did she? I mean real porn, strictly sex in all its permutations, as opposed to movies with a story line and so-called adult content? There is a difference, though its getting less and less.
She was the star of pretty much the first “celebrity sex tape” that started the whole phenomenon (there were a few before her, but that was pre-internet so they didn’t get as widely distributed).
Now, supposedly her husband and her intended the tape to be private and she didn’t agree to have it released, so I wouldn’t technically consider her a “porn star”.