Pointer Sister joins 'Celebrity Rehab'
According to TMZ, the 59-year-old R&B and disco star has a history of drug abuse.
Porter was one of the youngest members of the Pointer Sisters in the 1970s. She had several solo hits after leaving the group in the late '70s, including a cover of The Elgins's 'Heaven Must Have Sent You'.
Shauna Sand and Tila Tequila have also signed to appear on the reality series, which stars Dr. Drew Pinsky.
Producers are reportedly still pursuing Liza Minnelli.