Actor Daniel Baldwin -- who quit the 21-day round-the-clock program after asking to see naked photos of porn star and fellow participant Mary Carey -- was the only other Celebrity Rehab subject to not partake in the reunion show, Pinsky told The Post.
Six of the show's participants -- two-time The Surreal Life housemate and former Strange Love star Brigitte Nielsen; former WWE wrestler and The Surreal Life fourth-season housemate Joan "Chyna" Laurer; former Family Matters actress Jaimmee Foxworth; Crazy Town frontman Seth "Shifty" Binzer; Carey; and mixed-martial arts star Ricco "Suave" Rodriguez -- agreed to participate in Celebrity Rehab's reunion, according to Pinsky.
Pinsky also told The Post three of the aforementioned celebrity participants accepted his offer of an expense-free three months at a "sober living" facility after filming for the series was complete. The identities of the three who accepted the offer will be revealed during Celebrity Rehab's finale broadcast this Thursday at 10PM ET/PT on VH1.
Even Jeff Conaway -- a former Celebrity Fit Club third-season contestant who was rushed to the hospital during filming for Celebrity Rehab after experiencing a seizure -- participated in the reunion show, Pinsky told The Post.
Following filming for Celebrity Rehab last fall, Sierra was arrested after she was being booted from a Florida bar and allegedly became physically and verbally combative with police. She was charged with disorderly intoxication, resisting arrest without violence and probation violation before subsequently pleading not guilty.