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Janice Dickinson, Tiger mistress Rachel Uchitel, Jason Wahler, and Jeremy London will be among the residents on season four of Dr. Drew's Celebrity Rehab.

The network announced yesterday that they'll be joining Leif Garrett, Jason Davis, and Keyisha Cole's mother Frankie Lons at the 21-day program in Pasadena for the VH1 series.

Wahler, star of Laguna Beach, has been arrested six times for alcohol-related incidents, while Jeremy London most recently claimed he was kidnapped and forced to do drugs, a fact his family has serious doubts about.

As for Janice and Rachel (who will also be making an appearance on Michael Lohan's Celebrity House), we didn't know Celebrity Rehab dealt with plastic surgery and sex addictions!