from www.tmz.com – One of the women partying with Charlie Sheen before he was hospitalized was a porn star named Kacey Jordan … TMZ has learned.

We’re told Jordan — who’s reportedly 22 years old — was contacted by a 3rd party on behalf of the actor … who invited her over to Charlie’s place Tuesday night to “party.”

Sources connected to the situation tell us when Jordan arrived to Sheen’s place — the actor told her he was a huge fan and had been “searching for her for a year.”

We’re told 4 other women were at Sheen’s home when Jordan showed up — and Sheen’s shirt was stained with wine.

We’re told Jordan left Sheen’s home on Wednesday afternoon — but Charlie was “still partying” as she walked out the door.

As TMZ first reported, Sheen was hospitalized early [Thursday] morning with “severe abdominal pains.”