VH1 has announced Celebrity Rehab with Dr. Drew's fourth season will premiere Wednesday, December 1 at 10PM ET/PT.

Celebrity Rehab with Dr. Drew's fourth-season cast was revealed in July and consists of actor Jeremy London, former Tiger Woods mistress Rachel Uchitel, former America's Next Top Model judge and The Janice Dickinson Modeling Agency star Janice Dickinson, former Laguna Beach and The Hills star Jason Wahler, trust fund baby Jason Davis, actor Eric Roberts, musician Leif Garrett, and Frankie Lons, the mother of singer Keyshia Cole.

In addition to Dickinson and Wahler, several other fourth-season participants have prior connections to the reality realm. 

Lons appeared on Keyshia Cole: The Way It Is, a BET reality series that chronicled her daughter's life, and later co-starred in Frankie & Neffe, a 2009 spinoff with followed Lons and her daughter Neffeteria Pugh, while Garrett competed on Ty Murray's Celebrity Bull Riding Challenge and Davis appeared on an episode of Bravo's The Millionaire Matchmaker. Donald Trump also briefly invited Uchitel to compete on the fourth season of NBC's The Celebrity Apprentice -- which was filmed this past fall and will air in early 2011.

The fourth season will follow a similar format to its first three installments and feature the celebrities being treated by David Drew "Dr. Drew" Pinsky and his staff as they undergo a 21-day detoxification and treatment at The Pasadena Recovery Center.

In addition, drug addiction counselor Bob Forrest and resident technician Shelly Sprague will both reprise their roles for the show's fourth season.

VH1's Celebrity Rehab with Dr. Drew will consist of nine hour-long episodes.