Tila Tequila has exploited the death of Casey Johnson for personal gain; stripped down for the camera; and even faked a suicide attempt.

But she may have finally hit rock bottom with the following news:

Tila will NOT be taking part in the next edition of Celebrity Rehab.

The reality star had blogged about her inclusion on this VH1 series in May, saying she'd finally agreed to get treatment for her addiction to Ambien. But when Radar Online asked her rep if Tequila would be a cast member on the show, he simply replied: "No."

Seriously, what does it take to get booted from Celebrity Rehab?!? Dr. Drew Pinsky lives to profit off the troubles of Z-list stars.

Reports say the show is still scheduled to begin filming this month. Only Jason Wahler and Jeremy London are on board, though sources say the network is trying to sign up former tennis star Jennifer Capriati.

If it really wants to set a ratings record, there's an obvious candidate in need of MAJOR help: Mel Gibson.