[TMZ.com]- Newly too-skinny porn queen Jenna Jameson recently underwent a botched vaginoplasty operation, and has lost so much weight that she appears to be disappearing. Now, sources say, she’s become a disappointment to fans — at last weekend’s Exxxotica adult film expo in Miami.

“She was contractually supposed to show up for a total of six hours in two days yet arrived late both days and blew off the event 45 minutes early on the second day of her appearance,” one source told the New York Post. She also allegedly refused to answer fans’ questions about her weight or her surgery, and supposedly left early when she saw that fellow porn star Tera Patrick had a longer line of fans and admirers than she did.

For their part, event organizers say they were happy with her participation. Exxxotica’s Jay Handy said, “Jenna fulfilled her contract, and Jenna had a classic Jenna fan line – the biggest line, that wrapped around the Convention Hall.”

Jameson blames her extreme weight loss on stress from her ongoing divorce from estranged husband Jay Grdina.